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Finding the Fourth Proportional to 83,685.95, 115,487.51 and 45,960.20

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Solution

The fourth proportional to 83,685.95, 115,487.51 and 45,960.20 is: 63,425.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,685.95 : 115,487.51 = 45,960.20 : x
  2. Step 2: Convert to fraction form
    83,685.95/115,487.51 = 45,960.20/x
  3. Step 3: Cross multiply
    83,685.95x = 115,487.51 × 45,960.20
  4. Step 4: Simplify right side
    83,685.95x = 5,307,828,249.86
  5. Step 5: Solve for x
    x = 5,307,828,249.86/83,685.95
  6. Step 6: Final answer
    x = 63,425.56

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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.