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Finding the Fourth Proportional to 99,616.79, 137,471.27 and 54,294.81

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Solution

The fourth proportional to 99,616.79, 137,471.27 and 54,294.81 is: 74,926.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,616.79 : 137,471.27 = 54,294.81 : x
  2. Step 2: Convert to fraction form
    99,616.79/137,471.27 = 54,294.81/x
  3. Step 3: Cross multiply
    99,616.79x = 137,471.27 × 54,294.81
  4. Step 4: Simplify right side
    99,616.79x = 7,463,976,485.11
  5. Step 5: Solve for x
    x = 7,463,976,485.11/99,616.79
  6. Step 6: Final answer
    x = 74,926.89

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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.