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Finding the Fourth Proportional to 83,625.53, 115,404.08 and 45,385.40

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Solution

The fourth proportional to 83,625.53, 115,404.08 and 45,385.40 is: 62,632.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,625.53 : 115,404.08 = 45,385.40 : x
  2. Step 2: Convert to fraction form
    83,625.53/115,404.08 = 45,385.40/x
  3. Step 3: Cross multiply
    83,625.53x = 115,404.08 × 45,385.40
  4. Step 4: Simplify right side
    83,625.53x = 5,237,660,394.02
  5. Step 5: Solve for x
    x = 5,237,660,394.02/83,625.53
  6. Step 6: Final answer
    x = 62,632.32

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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.