Home / 71,218.36-98,281.92-39,387.88

Finding the Fourth Proportional to 71,218.36, 98,281.92 and 39,387.88

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Solution

The fourth proportional to 71,218.36, 98,281.92 and 39,387.88 is: 54,355.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,218.36 : 98,281.92 = 39,387.88 : x
  2. Step 2: Convert to fraction form
    71,218.36/98,281.92 = 39,387.88/x
  3. Step 3: Cross multiply
    71,218.36x = 98,281.92 × 39,387.88
  4. Step 4: Simplify right side
    71,218.36x = 3,871,116,471.13
  5. Step 5: Solve for x
    x = 3,871,116,471.13/71,218.36
  6. Step 6: Final answer
    x = 54,355.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.