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Finding the Fourth Proportional to 87,657.60, 131,551.20 and 58,065.60

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Solution

The fourth proportional to 87,657.60, 131,551.20 and 58,065.60 is: 87,141.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,657.60 : 131,551.20 = 58,065.60 : x
  2. Step 2: Convert to fraction form
    87,657.60/131,551.20 = 58,065.60/x
  3. Step 3: Cross multiply
    87,657.60x = 131,551.20 × 58,065.60
  4. Step 4: Simplify right side
    87,657.60x = 7,638,599,358.72
  5. Step 5: Solve for x
    x = 7,638,599,358.72/87,657.60
  6. Step 6: Final answer
    x = 87,141.32

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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.