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Finding the Fourth Proportional to 84,314.80, 126,472.20 and 42,324.40

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Solution

The fourth proportional to 84,314.80, 126,472.20 and 42,324.40 is: 63,486.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,314.80 : 126,472.20 = 42,324.40 : x
  2. Step 2: Convert to fraction form
    84,314.80/126,472.20 = 42,324.40/x
  3. Step 3: Cross multiply
    84,314.80x = 126,472.20 × 42,324.40
  4. Step 4: Simplify right side
    84,314.80x = 5,352,859,981.68
  5. Step 5: Solve for x
    x = 5,352,859,981.68/84,314.80
  6. Step 6: Final answer
    x = 63,486.60

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1.5x scale

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.