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Finding the Fourth Proportional to 87,276, 120,440.88 and 47,532

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Solution

The fourth proportional to 87,276, 120,440.88 and 47,532 is: 65,594.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,276 : 120,440.88 = 47,532 : x
  2. Step 2: Convert to fraction form
    87,276/120,440.88 = 47,532/x
  3. Step 3: Cross multiply
    87,276x = 120,440.88 × 47,532
  4. Step 4: Simplify right side
    87,276x = 5,724,795,908.16
  5. Step 5: Solve for x
    x = 5,724,795,908.16/87,276
  6. Step 6: Final answer
    x = 65,594.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.