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Finding the Fourth Proportional to 83,635.34, 115,418.12 and 45,395.64

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Solution

The fourth proportional to 83,635.34, 115,418.12 and 45,395.64 is: 62,646.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,635.34 : 115,418.12 = 45,395.64 : x
  2. Step 2: Convert to fraction form
    83,635.34/115,418.12 = 45,395.64/x
  3. Step 3: Cross multiply
    83,635.34x = 115,418.12 × 45,395.64
  4. Step 4: Simplify right side
    83,635.34x = 5,239,479,198.02
  5. Step 5: Solve for x
    x = 5,239,479,198.02/83,635.34
  6. Step 6: Final answer
    x = 62,646.72

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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.