Home / 77,979.60-107,610.39-43,987.59

Finding the Fourth Proportional to 77,979.60, 107,610.39 and 43,987.59

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Solution

The fourth proportional to 77,979.60, 107,610.39 and 43,987.59 is: 60,702.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,979.60 : 107,610.39 = 43,987.59 : x
  2. Step 2: Convert to fraction form
    77,979.60/107,610.39 = 43,987.59/x
  3. Step 3: Cross multiply
    77,979.60x = 107,610.39 × 43,987.59
  4. Step 4: Simplify right side
    77,979.60x = 4,733,521,715.06
  5. Step 5: Solve for x
    x = 4,733,521,715.06/77,979.60
  6. Step 6: Final answer
    x = 60,702.05

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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.