Home / 71,726.31-98,982-39,895.13

Finding the Fourth Proportional to 71,726.31, 98,982 and 39,895.13

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Solution

The fourth proportional to 71,726.31, 98,982 and 39,895.13 is: 55,055.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,726.31 : 98,982 = 39,895.13 : x
  2. Step 2: Convert to fraction form
    71,726.31/98,982 = 39,895.13/x
  3. Step 3: Cross multiply
    71,726.31x = 98,982 × 39,895.13
  4. Step 4: Simplify right side
    71,726.31x = 3,948,900,005.12
  5. Step 5: Solve for x
    x = 3,948,900,005.12/71,726.31
  6. Step 6: Final answer
    x = 55,055.11

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1.5x scale

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.