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Finding the Fourth Proportional to 87,150.68, 130,713.66 and 27,978.68

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Solution

The fourth proportional to 87,150.68, 130,713.66 and 27,978.68 is: 41,964.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,150.68 : 130,713.66 = 27,978.68 : x
  2. Step 2: Convert to fraction form
    87,150.68/130,713.66 = 27,978.68/x
  3. Step 3: Cross multiply
    87,150.68x = 130,713.66 × 27,978.68
  4. Step 4: Simplify right side
    87,150.68x = 3,657,195,664.77
  5. Step 5: Solve for x
    x = 3,657,195,664.77/87,150.68
  6. Step 6: Final answer
    x = 41,964.05

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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.