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Finding the Fourth Proportional to 72,450.70, 108,708.45 and 25,737.10

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Solution

The fourth proportional to 72,450.70, 108,708.45 and 25,737.10 is: 38,617.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,450.70 : 108,708.45 = 25,737.10 : x
  2. Step 2: Convert to fraction form
    72,450.70/108,708.45 = 25,737.10/x
  3. Step 3: Cross multiply
    72,450.70x = 108,708.45 × 25,737.10
  4. Step 4: Simplify right side
    72,450.70x = 2,797,840,248.50
  5. Step 5: Solve for x
    x = 2,797,840,248.50/72,450.70
  6. Step 6: Final answer
    x = 38,617.16

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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.