Home / 81,159.06-121,729.95-38,454.18

Finding the Fourth Proportional to 81,159.06, 121,729.95 and 38,454.18

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Solution

The fourth proportional to 81,159.06, 121,729.95 and 38,454.18 is: 57,677.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,159.06 : 121,729.95 = 38,454.18 : x
  2. Step 2: Convert to fraction form
    81,159.06/121,729.95 = 38,454.18/x
  3. Step 3: Cross multiply
    81,159.06x = 121,729.95 × 38,454.18
  4. Step 4: Simplify right side
    81,159.06x = 4,681,025,408.69
  5. Step 5: Solve for x
    x = 4,681,025,408.69/81,159.06
  6. Step 6: Final answer
    x = 57,677.18

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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.