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Finding the Fourth Proportional to 73,957.12, 102,060.56 and 40,423.12

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Solution

The fourth proportional to 73,957.12, 102,060.56 and 40,423.12 is: 55,783.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,957.12 : 102,060.56 = 40,423.12 : x
  2. Step 2: Convert to fraction form
    73,957.12/102,060.56 = 40,423.12/x
  3. Step 3: Cross multiply
    73,957.12x = 102,060.56 × 40,423.12
  4. Step 4: Simplify right side
    73,957.12x = 4,125,606,264.15
  5. Step 5: Solve for x
    x = 4,125,606,264.15/73,957.12
  6. Step 6: Final answer
    x = 55,783.76

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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.