Home / 83,715.20-125,572.80-28,311.20

Finding the Fourth Proportional to 83,715.20, 125,572.80 and 28,311.20

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Solution

The fourth proportional to 83,715.20, 125,572.80 and 28,311.20 is: 42,466.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,715.20 : 125,572.80 = 28,311.20 : x
  2. Step 2: Convert to fraction form
    83,715.20/125,572.80 = 28,311.20/x
  3. Step 3: Cross multiply
    83,715.20x = 125,572.80 × 28,311.20
  4. Step 4: Simplify right side
    83,715.20x = 3,555,116,655.36
  5. Step 5: Solve for x
    x = 3,555,116,655.36/83,715.20
  6. Step 6: Final answer
    x = 42,466.80

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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.