Home / 42,012.61-57,980.21-23,149.73

Finding the Fourth Proportional to 42,012.61, 57,980.21 and 23,149.73

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Solution

The fourth proportional to 42,012.61, 57,980.21 and 23,149.73 is: 31,948.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,012.61 : 57,980.21 = 23,149.73 : x
  2. Step 2: Convert to fraction form
    42,012.61/57,980.21 = 23,149.73/x
  3. Step 3: Cross multiply
    42,012.61x = 57,980.21 × 23,149.73
  4. Step 4: Simplify right side
    42,012.61x = 1,342,226,474.98
  5. Step 5: Solve for x
    x = 1,342,226,474.98/42,012.61
  6. Step 6: Final answer
    x = 31,948.18

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Half scale
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Double scale
Find fourth proportional to 42,013.61, 57,981.59 and 23,150.73
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.