Home / 77,639.78-107,146.68-43,658.96

Finding the Fourth Proportional to 77,639.78, 107,146.68 and 43,658.96

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Solution

The fourth proportional to 77,639.78, 107,146.68 and 43,658.96 is: 60,251.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,639.78 : 107,146.68 = 43,658.96 : x
  2. Step 2: Convert to fraction form
    77,639.78/107,146.68 = 43,658.96/x
  3. Step 3: Cross multiply
    77,639.78x = 107,146.68 × 43,658.96
  4. Step 4: Simplify right side
    77,639.78x = 4,677,912,080.52
  5. Step 5: Solve for x
    x = 4,677,912,080.52/77,639.78
  6. Step 6: Final answer
    x = 60,251.49

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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.