Home / 77,613.39-107,087.49-47,387.70

Finding the Fourth Proportional to 77,613.39, 107,087.49 and 47,387.70

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Solution

The fourth proportional to 77,613.39, 107,087.49 and 47,387.70 is: 65,383.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,613.39 : 107,087.49 = 47,387.70 : x
  2. Step 2: Convert to fraction form
    77,613.39/107,087.49 = 47,387.70/x
  3. Step 3: Cross multiply
    77,613.39x = 107,087.49 × 47,387.70
  4. Step 4: Simplify right side
    77,613.39x = 5,074,629,849.87
  5. Step 5: Solve for x
    x = 5,074,629,849.87/77,613.39
  6. Step 6: Final answer
    x = 65,383.43

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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.