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Finding the Fourth Proportional to 99,956.08, 137,935.20 and 54,633.28

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Solution

The fourth proportional to 99,956.08, 137,935.20 and 54,633.28 is: 75,391.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,956.08 : 137,935.20 = 54,633.28 : x
  2. Step 2: Convert to fraction form
    99,956.08/137,935.20 = 54,633.28/x
  3. Step 3: Cross multiply
    99,956.08x = 137,935.20 × 54,633.28
  4. Step 4: Simplify right side
    99,956.08x = 7,535,852,403.46
  5. Step 5: Solve for x
    x = 7,535,852,403.46/99,956.08
  6. Step 6: Final answer
    x = 75,391.64

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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.