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Finding the Fourth Proportional to 87,295.32, 130,949.82 and 28,132.74

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Solution

The fourth proportional to 87,295.32, 130,949.82 and 28,132.74 is: 42,201.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,295.32 : 130,949.82 = 28,132.74 : x
  2. Step 2: Convert to fraction form
    87,295.32/130,949.82 = 28,132.74/x
  3. Step 3: Cross multiply
    87,295.32x = 130,949.82 × 28,132.74
  4. Step 4: Simplify right side
    87,295.32x = 3,683,977,239.11
  5. Step 5: Solve for x
    x = 3,683,977,239.11/87,295.32
  6. Step 6: Final answer
    x = 42,201.31

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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.