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Finding the Fourth Proportional to 74,850, 112,304.16 and 28,106.52

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Solution

The fourth proportional to 74,850, 112,304.16 and 28,106.52 is: 42,170.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,850 : 112,304.16 = 28,106.52 : x
  2. Step 2: Convert to fraction form
    74,850/112,304.16 = 28,106.52/x
  3. Step 3: Cross multiply
    74,850x = 112,304.16 × 28,106.52
  4. Step 4: Simplify right side
    74,850x = 3,156,479,119.12
  5. Step 5: Solve for x
    x = 3,156,479,119.12/74,850
  6. Step 6: Final answer
    x = 42,170.73

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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.