Home / 82,534.71-123,438.20-71,849.39

Finding the Fourth Proportional to 82,534.71, 123,438.20 and 71,849.39

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Solution

The fourth proportional to 82,534.71, 123,438.20 and 71,849.39 is: 107,457.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,534.71 : 123,438.20 = 71,849.39 : x
  2. Step 2: Convert to fraction form
    82,534.71/123,438.20 = 71,849.39/x
  3. Step 3: Cross multiply
    82,534.71x = 123,438.20 × 71,849.39
  4. Step 4: Simplify right side
    82,534.71x = 8,868,959,322.05
  5. Step 5: Solve for x
    x = 8,868,959,322.05/82,534.71
  6. Step 6: Final answer
    x = 107,457.33

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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.