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Finding the Fourth Proportional to 87,220.64, 130,644.96 and 65,925.92

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Solution

The fourth proportional to 87,220.64, 130,644.96 and 65,925.92 is: 98,748.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,220.64 : 130,644.96 = 65,925.92 : x
  2. Step 2: Convert to fraction form
    87,220.64/130,644.96 = 65,925.92/x
  3. Step 3: Cross multiply
    87,220.64x = 130,644.96 × 65,925.92
  4. Step 4: Simplify right side
    87,220.64x = 8,612,889,181.36
  5. Step 5: Solve for x
    x = 8,612,889,181.36/87,220.64
  6. Step 6: Final answer
    x = 98,748.29

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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.