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Finding the Fourth Proportional to 87,180.64, 130,775.64 and 28,011.76

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Solution

The fourth proportional to 87,180.64, 130,775.64 and 28,011.76 is: 42,019.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,180.64 : 130,775.64 = 28,011.76 : x
  2. Step 2: Convert to fraction form
    87,180.64/130,775.64 = 28,011.76/x
  3. Step 3: Cross multiply
    87,180.64x = 130,775.64 × 28,011.76
  4. Step 4: Simplify right side
    87,180.64x = 3,663,255,841.53
  5. Step 5: Solve for x
    x = 3,663,255,841.53/87,180.64
  6. Step 6: Final answer
    x = 42,019.14

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1.5x scale

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.