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Finding the Fourth Proportional to 99,053.72, 136,693.54 and 53,731.79

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Solution

The fourth proportional to 99,053.72, 136,693.54 and 53,731.79 is: 74,149.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,053.72 : 136,693.54 = 53,731.79 : x
  2. Step 2: Convert to fraction form
    99,053.72/136,693.54 = 53,731.79/x
  3. Step 3: Cross multiply
    99,053.72x = 136,693.54 × 53,731.79
  4. Step 4: Simplify right side
    99,053.72x = 7,344,788,585.64
  5. Step 5: Solve for x
    x = 7,344,788,585.64/99,053.72
  6. Step 6: Final answer
    x = 74,149.55

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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.