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Finding the Fourth Proportional to 99,059, 136,703.82 and 54,347

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Solution

The fourth proportional to 99,059, 136,703.82 and 54,347 is: 75,000.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,059 : 136,703.82 = 54,347 : x
  2. Step 2: Convert to fraction form
    99,059/136,703.82 = 54,347/x
  3. Step 3: Cross multiply
    99,059x = 136,703.82 × 54,347
  4. Step 4: Simplify right side
    99,059x = 7,429,442,505.54
  5. Step 5: Solve for x
    x = 7,429,442,505.54/99,059
  6. Step 6: Final answer
    x = 75,000.18

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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.