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Finding the Fourth Proportional to 99,560.34, 137,391.39 and 54,239.22

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Solution

The fourth proportional to 99,560.34, 137,391.39 and 54,239.22 is: 74,849.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,560.34 : 137,391.39 = 54,239.22 : x
  2. Step 2: Convert to fraction form
    99,560.34/137,391.39 = 54,239.22/x
  3. Step 3: Cross multiply
    99,560.34x = 137,391.39 × 54,239.22
  4. Step 4: Simplify right side
    99,560.34x = 7,452,001,828.32
  5. Step 5: Solve for x
    x = 7,452,001,828.32/99,560.34
  6. Step 6: Final answer
    x = 74,849.10

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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.