Home / 77,972.47-107,590.05-43,979.47

Finding the Fourth Proportional to 77,972.47, 107,590.05 and 43,979.47

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Solution

The fourth proportional to 77,972.47, 107,590.05 and 43,979.47 is: 60,684.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,972.47 : 107,590.05 = 43,979.47 : x
  2. Step 2: Convert to fraction form
    77,972.47/107,590.05 = 43,979.47/x
  3. Step 3: Cross multiply
    77,972.47x = 107,590.05 × 43,979.47
  4. Step 4: Simplify right side
    77,972.47x = 4,731,753,107.30
  5. Step 5: Solve for x
    x = 4,731,753,107.30/77,972.47
  6. Step 6: Final answer
    x = 60,684.92

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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.