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Finding the Fourth Proportional to 87,352.40, 131,125.80 and 47,986.40

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Solution

The fourth proportional to 87,352.40, 131,125.80 and 47,986.40 is: 72,033.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,352.40 : 131,125.80 = 47,986.40 : x
  2. Step 2: Convert to fraction form
    87,352.40/131,125.80 = 47,986.40/x
  3. Step 3: Cross multiply
    87,352.40x = 131,125.80 × 47,986.40
  4. Step 4: Simplify right side
    87,352.40x = 6,292,255,089.12
  5. Step 5: Solve for x
    x = 6,292,255,089.12/87,352.40
  6. Step 6: Final answer
    x = 72,033.00

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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.