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Finding the Fourth Proportional to 65,560.95, 90,473.25 and 36,878.46

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Solution

The fourth proportional to 65,560.95, 90,473.25 and 36,878.46 is: 50,891.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,560.95 : 90,473.25 = 36,878.46 : x
  2. Step 2: Convert to fraction form
    65,560.95/90,473.25 = 36,878.46/x
  3. Step 3: Cross multiply
    65,560.95x = 90,473.25 × 36,878.46
  4. Step 4: Simplify right side
    65,560.95x = 3,336,514,131.20
  5. Step 5: Solve for x
    x = 3,336,514,131.20/65,560.95
  6. Step 6: Final answer
    x = 50,891.79

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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.