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Finding the Fourth Proportional to 101,729.40, 140,373.66 and 55,776.95

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Solution

The fourth proportional to 101,729.40, 140,373.66 and 55,776.95 is: 76,965.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,729.40 : 140,373.66 = 55,776.95 : x
  2. Step 2: Convert to fraction form
    101,729.40/140,373.66 = 55,776.95/x
  3. Step 3: Cross multiply
    101,729.40x = 140,373.66 × 55,776.95
  4. Step 4: Simplify right side
    101,729.40x = 7,829,613,913.27
  5. Step 5: Solve for x
    x = 7,829,613,913.27/101,729.40
  6. Step 6: Final answer
    x = 76,965.11

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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.