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Finding the Fourth Proportional to 71,957.20, 107,935.08 and 40,367.20

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Solution

The fourth proportional to 71,957.20, 107,935.08 and 40,367.20 is: 60,550.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,957.20 : 107,935.08 = 40,367.20 : x
  2. Step 2: Convert to fraction form
    71,957.20/107,935.08 = 40,367.20/x
  3. Step 3: Cross multiply
    71,957.20x = 107,935.08 × 40,367.20
  4. Step 4: Simplify right side
    71,957.20x = 4,357,036,961.38
  5. Step 5: Solve for x
    x = 4,357,036,961.38/71,957.20
  6. Step 6: Final answer
    x = 60,550.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.