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Finding the Fourth Proportional to 87,208.60, 120,348.12 and 49,482.76

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Solution

The fourth proportional to 87,208.60, 120,348.12 and 49,482.76 is: 68,286.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,208.60 : 120,348.12 = 49,482.76 : x
  2. Step 2: Convert to fraction form
    87,208.60/120,348.12 = 49,482.76/x
  3. Step 3: Cross multiply
    87,208.60x = 120,348.12 × 49,482.76
  4. Step 4: Simplify right side
    87,208.60x = 5,955,157,138.41
  5. Step 5: Solve for x
    x = 5,955,157,138.41/87,208.60
  6. Step 6: Final answer
    x = 68,286.35

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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.