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Finding the Fourth Proportional to 71,332.60, 98,435.28 and 39,499.60

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Solution

The fourth proportional to 71,332.60, 98,435.28 and 39,499.60 is: 54,507.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,332.60 : 98,435.28 = 39,499.60 : x
  2. Step 2: Convert to fraction form
    71,332.60/98,435.28 = 39,499.60/x
  3. Step 3: Cross multiply
    71,332.60x = 98,435.28 × 39,499.60
  4. Step 4: Simplify right side
    71,332.60x = 3,888,154,185.89
  5. Step 5: Solve for x
    x = 3,888,154,185.89/71,332.60
  6. Step 6: Final answer
    x = 54,507.39

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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.