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Finding the Fourth Proportional to 87,362.62, 130,913.71 and 45,186.35

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Solution

The fourth proportional to 87,362.62, 130,913.71 and 45,186.35 is: 67,712.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,362.62 : 130,913.71 = 45,186.35 : x
  2. Step 2: Convert to fraction form
    87,362.62/130,913.71 = 45,186.35/x
  3. Step 3: Cross multiply
    87,362.62x = 130,913.71 × 45,186.35
  4. Step 4: Simplify right side
    87,362.62x = 5,915,511,952.32
  5. Step 5: Solve for x
    x = 5,915,511,952.32/87,362.62
  6. Step 6: Final answer
    x = 67,712.16

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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.