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Finding the Fourth Proportional to 86,480.30, 129,485.95 and 44,839.82

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Solution

The fourth proportional to 86,480.30, 129,485.95 and 44,839.82 is: 67,138.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,480.30 : 129,485.95 = 44,839.82 : x
  2. Step 2: Convert to fraction form
    86,480.30/129,485.95 = 44,839.82/x
  3. Step 3: Cross multiply
    86,480.30x = 129,485.95 × 44,839.82
  4. Step 4: Simplify right side
    86,480.30x = 5,806,126,690.53
  5. Step 5: Solve for x
    x = 5,806,126,690.53/86,480.30
  6. Step 6: Final answer
    x = 67,138.14

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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.