Home / 82,426.40-123,769.20-47,434.40

Finding the Fourth Proportional to 82,426.40, 123,769.20 and 47,434.40

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Solution

The fourth proportional to 82,426.40, 123,769.20 and 47,434.40 is: 71,226.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,426.40 : 123,769.20 = 47,434.40 : x
  2. Step 2: Convert to fraction form
    82,426.40/123,769.20 = 47,434.40/x
  3. Step 3: Cross multiply
    82,426.40x = 123,769.20 × 47,434.40
  4. Step 4: Simplify right side
    82,426.40x = 5,870,917,740.48
  5. Step 5: Solve for x
    x = 5,870,917,740.48/82,426.40
  6. Step 6: Final answer
    x = 71,226.18

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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.