Home / 66,670.12-92,004.54-39,828.34

Finding the Fourth Proportional to 66,670.12, 92,004.54 and 39,828.34

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Solution

The fourth proportional to 66,670.12, 92,004.54 and 39,828.34 is: 54,962.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,670.12 : 92,004.54 = 39,828.34 : x
  2. Step 2: Convert to fraction form
    66,670.12/92,004.54 = 39,828.34/x
  3. Step 3: Cross multiply
    66,670.12x = 92,004.54 × 39,828.34
  4. Step 4: Simplify right side
    66,670.12x = 3,664,388,100.66
  5. Step 5: Solve for x
    x = 3,664,388,100.66/66,670.12
  6. Step 6: Final answer
    x = 54,962.97

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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.