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Finding the Fourth Proportional to 72,117.92, 99,516.02 and 41,902.92

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Solution

The fourth proportional to 72,117.92, 99,516.02 and 41,902.92 is: 57,822.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,117.92 : 99,516.02 = 41,902.92 : x
  2. Step 2: Convert to fraction form
    72,117.92/99,516.02 = 41,902.92/x
  3. Step 3: Cross multiply
    72,117.92x = 99,516.02 × 41,902.92
  4. Step 4: Simplify right side
    72,117.92x = 4,170,011,733.12
  5. Step 5: Solve for x
    x = 4,170,011,733.12/72,117.92
  6. Step 6: Final answer
    x = 57,822.13

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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.