Home / 42,000.75-57,961.04-23,139.09

Finding the Fourth Proportional to 42,000.75, 57,961.04 and 23,139.09

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Solution

The fourth proportional to 42,000.75, 57,961.04 and 23,139.09 is: 31,931.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,000.75 : 57,961.04 = 23,139.09 : x
  2. Step 2: Convert to fraction form
    42,000.75/57,961.04 = 23,139.09/x
  3. Step 3: Cross multiply
    42,000.75x = 57,961.04 × 23,139.09
  4. Step 4: Simplify right side
    42,000.75x = 1,341,165,605.36
  5. Step 5: Solve for x
    x = 1,341,165,605.36/42,000.75
  6. Step 6: Final answer
    x = 31,931.94

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Half scale
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Double scale
Find fourth proportional to 42,001.75, 57,962.42 and 23,140.09
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.