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Finding the Fourth Proportional to 83,381.55, 115,065.39 and 45,655.80

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Solution

The fourth proportional to 83,381.55, 115,065.39 and 45,655.80 is: 63,004.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,381.55 : 115,065.39 = 45,655.80 : x
  2. Step 2: Convert to fraction form
    83,381.55/115,065.39 = 45,655.80/x
  3. Step 3: Cross multiply
    83,381.55x = 115,065.39 × 45,655.80
  4. Step 4: Simplify right side
    83,381.55x = 5,253,402,432.76
  5. Step 5: Solve for x
    x = 5,253,402,432.76/83,381.55
  6. Step 6: Final answer
    x = 63,004.37

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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.