Home / 84,545.28-126,803.76-28,379.10

Finding the Fourth Proportional to 84,545.28, 126,803.76 and 28,379.10

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Solution

The fourth proportional to 84,545.28, 126,803.76 and 28,379.10 is: 42,563.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,545.28 : 126,803.76 = 28,379.10 : x
  2. Step 2: Convert to fraction form
    84,545.28/126,803.76 = 28,379.10/x
  3. Step 3: Cross multiply
    84,545.28x = 126,803.76 × 28,379.10
  4. Step 4: Simplify right side
    84,545.28x = 3,598,576,585.42
  5. Step 5: Solve for x
    x = 3,598,576,585.42/84,545.28
  6. Step 6: Final answer
    x = 42,563.90

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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.