Home / 83,330.12-124,849.35-69,379.76

Finding the Fourth Proportional to 83,330.12, 124,849.35 and 69,379.76

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Solution

The fourth proportional to 83,330.12, 124,849.35 and 69,379.76 is: 103,948.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,330.12 : 124,849.35 = 69,379.76 : x
  2. Step 2: Convert to fraction form
    83,330.12/124,849.35 = 69,379.76/x
  3. Step 3: Cross multiply
    83,330.12x = 124,849.35 × 69,379.76
  4. Step 4: Simplify right side
    83,330.12x = 8,662,017,314.91
  5. Step 5: Solve for x
    x = 8,662,017,314.91/83,330.12
  6. Step 6: Final answer
    x = 103,948.22

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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.