Home / 82,875.20-124,312.80-20,545.70

Finding the Fourth Proportional to 82,875.20, 124,312.80 and 20,545.70

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Solution

The fourth proportional to 82,875.20, 124,312.80 and 20,545.70 is: 30,818.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,875.20 : 124,312.80 = 20,545.70 : x
  2. Step 2: Convert to fraction form
    82,875.20/124,312.80 = 20,545.70/x
  3. Step 3: Cross multiply
    82,875.20x = 124,312.80 × 20,545.70
  4. Step 4: Simplify right side
    82,875.20x = 2,554,093,494.96
  5. Step 5: Solve for x
    x = 2,554,093,494.96/82,875.20
  6. Step 6: Final answer
    x = 30,818.55

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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.