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Finding the Fourth Proportional to 84,482.76, 126,612.05 and 70,470.24

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Solution

The fourth proportional to 84,482.76, 126,612.05 and 70,470.24 is: 105,611.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,482.76 : 126,612.05 = 70,470.24 : x
  2. Step 2: Convert to fraction form
    84,482.76/126,612.05 = 70,470.24/x
  3. Step 3: Cross multiply
    84,482.76x = 126,612.05 × 70,470.24
  4. Step 4: Simplify right side
    84,482.76x = 8,922,381,198.04
  5. Step 5: Solve for x
    x = 8,922,381,198.04/84,482.76
  6. Step 6: Final answer
    x = 105,611.86

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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.