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Finding the Fourth Proportional to 73,168.58, 100,972.95 and 39,634.58

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Solution

The fourth proportional to 73,168.58, 100,972.95 and 39,634.58 is: 54,695.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,168.58 : 100,972.95 = 39,634.58 : x
  2. Step 2: Convert to fraction form
    73,168.58/100,972.95 = 39,634.58/x
  3. Step 3: Cross multiply
    73,168.58x = 100,972.95 × 39,634.58
  4. Step 4: Simplify right side
    73,168.58x = 4,002,020,464.61
  5. Step 5: Solve for x
    x = 4,002,020,464.61/73,168.58
  6. Step 6: Final answer
    x = 54,695.89

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1.5x scale

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.