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Finding the Fourth Proportional to 67,400.55, 101,100.83 and 54,278.55

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Solution

The fourth proportional to 67,400.55, 101,100.83 and 54,278.55 is: 81,417.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,400.55 : 101,100.83 = 54,278.55 : x
  2. Step 2: Convert to fraction form
    67,400.55/101,100.83 = 54,278.55/x
  3. Step 3: Cross multiply
    67,400.55x = 101,100.83 × 54,278.55
  4. Step 4: Simplify right side
    67,400.55x = 5,487,606,184.80
  5. Step 5: Solve for x
    x = 5,487,606,184.80/67,400.55
  6. Step 6: Final answer
    x = 81,417.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.