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Finding the Fourth Proportional to 87,510.60, 120,722.56 and 57,282.60

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Solution

The fourth proportional to 87,510.60, 120,722.56 and 57,282.60 is: 79,022.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,510.60 : 120,722.56 = 57,282.60 : x
  2. Step 2: Convert to fraction form
    87,510.60/120,722.56 = 57,282.60/x
  3. Step 3: Cross multiply
    87,510.60x = 120,722.56 × 57,282.60
  4. Step 4: Simplify right side
    87,510.60x = 6,915,302,115.46
  5. Step 5: Solve for x
    x = 6,915,302,115.46/87,510.60
  6. Step 6: Final answer
    x = 79,022.45

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1.5x scale

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.