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Finding the Fourth Proportional to 83,157.56, 124,785.54 and 30,603.95

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Solution

The fourth proportional to 83,157.56, 124,785.54 and 30,603.95 is: 45,924.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,157.56 : 124,785.54 = 30,603.95 : x
  2. Step 2: Convert to fraction form
    83,157.56/124,785.54 = 30,603.95/x
  3. Step 3: Cross multiply
    83,157.56x = 124,785.54 × 30,603.95
  4. Step 4: Simplify right side
    83,157.56x = 3,818,930,426.88
  5. Step 5: Solve for x
    x = 3,818,930,426.88/83,157.56
  6. Step 6: Final answer
    x = 45,924.03

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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.