Home / 71,700.39-98,944.20-39,868.74

Finding the Fourth Proportional to 71,700.39, 98,944.20 and 39,868.74

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Solution

The fourth proportional to 71,700.39, 98,944.20 and 39,868.74 is: 55,017.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,700.39 : 98,944.20 = 39,868.74 : x
  2. Step 2: Convert to fraction form
    71,700.39/98,944.20 = 39,868.74/x
  3. Step 3: Cross multiply
    71,700.39x = 98,944.20 × 39,868.74
  4. Step 4: Simplify right side
    71,700.39x = 3,944,780,584.31
  5. Step 5: Solve for x
    x = 3,944,780,584.31/71,700.39
  6. Step 6: Final answer
    x = 55,017.56

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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.