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Finding the Fourth Proportional to 83,685.44, 115,485.44 and 45,445.76

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Solution

The fourth proportional to 83,685.44, 115,485.44 and 45,445.76 is: 62,714.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,685.44 : 115,485.44 = 45,445.76 : x
  2. Step 2: Convert to fraction form
    83,685.44/115,485.44 = 45,445.76/x
  3. Step 3: Cross multiply
    83,685.44x = 115,485.44 × 45,445.76
  4. Step 4: Simplify right side
    83,685.44x = 5,248,323,589.73
  5. Step 5: Solve for x
    x = 5,248,323,589.73/83,685.44
  6. Step 6: Final answer
    x = 62,714.90

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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.