Home / 71,551.02-98,729.91-39,720.18

Finding the Fourth Proportional to 71,551.02, 98,729.91 and 39,720.18

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Solution

The fourth proportional to 71,551.02, 98,729.91 and 39,720.18 is: 54,808.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,551.02 : 98,729.91 = 39,720.18 : x
  2. Step 2: Convert to fraction form
    71,551.02/98,729.91 = 39,720.18/x
  3. Step 3: Cross multiply
    71,551.02x = 98,729.91 × 39,720.18
  4. Step 4: Simplify right side
    71,551.02x = 3,921,569,796.58
  5. Step 5: Solve for x
    x = 3,921,569,796.58/71,551.02
  6. Step 6: Final answer
    x = 54,808.02

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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.