Home / 51,545.82-71,139.12-28,890.92

Finding the Fourth Proportional to 51,545.82, 71,139.12 and 28,890.92

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Solution

The fourth proportional to 51,545.82, 71,139.12 and 28,890.92 is: 39,872.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,545.82 : 71,139.12 = 28,890.92 : x
  2. Step 2: Convert to fraction form
    51,545.82/71,139.12 = 28,890.92/x
  3. Step 3: Cross multiply
    51,545.82x = 71,139.12 × 28,890.92
  4. Step 4: Simplify right side
    51,545.82x = 2,055,274,624.79
  5. Step 5: Solve for x
    x = 2,055,274,624.79/51,545.82
  6. Step 6: Final answer
    x = 39,872.77

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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.