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Finding the Fourth Proportional to 86,737.68, 129,999.96 and 49,329

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Solution

The fourth proportional to 86,737.68, 129,999.96 and 49,329 is: 73,932.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,737.68 : 129,999.96 = 49,329 : x
  2. Step 2: Convert to fraction form
    86,737.68/129,999.96 = 49,329/x
  3. Step 3: Cross multiply
    86,737.68x = 129,999.96 × 49,329
  4. Step 4: Simplify right side
    86,737.68x = 6,412,768,026.84
  5. Step 5: Solve for x
    x = 6,412,768,026.84/86,737.68
  6. Step 6: Final answer
    x = 73,932.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.