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Finding the Fourth Proportional to 86,335.75, 129,522.15 and 48,913.75

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Solution

The fourth proportional to 86,335.75, 129,522.15 and 48,913.75 is: 73,381.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,335.75 : 129,522.15 = 48,913.75 : x
  2. Step 2: Convert to fraction form
    86,335.75/129,522.15 = 48,913.75/x
  3. Step 3: Cross multiply
    86,335.75x = 129,522.15 × 48,913.75
  4. Step 4: Simplify right side
    86,335.75x = 6,335,414,064.56
  5. Step 5: Solve for x
    x = 6,335,414,064.56/86,335.75
  6. Step 6: Final answer
    x = 73,381.12

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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.