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Finding the Fourth Proportional to 87,008.60, 130,512.84 and 21,344.60

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Solution

The fourth proportional to 87,008.60, 130,512.84 and 21,344.60 is: 32,016.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,008.60 : 130,512.84 = 21,344.60 : x
  2. Step 2: Convert to fraction form
    87,008.60/130,512.84 = 21,344.60/x
  3. Step 3: Cross multiply
    87,008.60x = 130,512.84 × 21,344.60
  4. Step 4: Simplify right side
    87,008.60x = 2,785,744,364.66
  5. Step 5: Solve for x
    x = 2,785,744,364.66/87,008.60
  6. Step 6: Final answer
    x = 32,016.89

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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.