Home / 81,403.47-122,116.68-25,248.15

Finding the Fourth Proportional to 81,403.47, 122,116.68 and 25,248.15

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Solution

The fourth proportional to 81,403.47, 122,116.68 and 25,248.15 is: 37,875.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,403.47 : 122,116.68 = 25,248.15 : x
  2. Step 2: Convert to fraction form
    81,403.47/122,116.68 = 25,248.15/x
  3. Step 3: Cross multiply
    81,403.47x = 122,116.68 × 25,248.15
  4. Step 4: Simplify right side
    81,403.47x = 3,083,219,954.16
  5. Step 5: Solve for x
    x = 3,083,219,954.16/81,403.47
  6. Step 6: Final answer
    x = 37,875.78

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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.