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Finding the Fourth Proportional to 71,562.60, 98,751.36 and 39,729.60

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Solution

The fourth proportional to 71,562.60, 98,751.36 and 39,729.60 is: 54,824.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,562.60 : 98,751.36 = 39,729.60 : x
  2. Step 2: Convert to fraction form
    71,562.60/98,751.36 = 39,729.60/x
  3. Step 3: Cross multiply
    71,562.60x = 98,751.36 × 39,729.60
  4. Step 4: Simplify right side
    71,562.60x = 3,923,352,032.26
  5. Step 5: Solve for x
    x = 3,923,352,032.26/71,562.60
  6. Step 6: Final answer
    x = 54,824.06

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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.