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Finding the Fourth Proportional to 83,124.40, 124,764.90 and 43,709.80

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Solution

The fourth proportional to 83,124.40, 124,764.90 and 43,709.80 is: 65,605.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,124.40 : 124,764.90 = 43,709.80 : x
  2. Step 2: Convert to fraction form
    83,124.40/124,764.90 = 43,709.80/x
  3. Step 3: Cross multiply
    83,124.40x = 124,764.90 × 43,709.80
  4. Step 4: Simplify right side
    83,124.40x = 5,453,448,826.02
  5. Step 5: Solve for x
    x = 5,453,448,826.02/83,124.40
  6. Step 6: Final answer
    x = 65,605.87

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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.