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Finding the Fourth Proportional to 99,047.92, 136,686.54 and 56,607.88

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Solution

The fourth proportional to 99,047.92, 136,686.54 and 56,607.88 is: 78,119.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,047.92 : 136,686.54 = 56,607.88 : x
  2. Step 2: Convert to fraction form
    99,047.92/136,686.54 = 56,607.88/x
  3. Step 3: Cross multiply
    99,047.92x = 136,686.54 × 56,607.88
  4. Step 4: Simplify right side
    99,047.92x = 7,737,535,253.94
  5. Step 5: Solve for x
    x = 7,737,535,253.94/99,047.92
  6. Step 6: Final answer
    x = 78,119.11

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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.