Home / 77,970.40-107,590.11-43,979.44

Finding the Fourth Proportional to 77,970.40, 107,590.11 and 43,979.44

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Solution

The fourth proportional to 77,970.40, 107,590.11 and 43,979.44 is: 60,686.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,970.40 : 107,590.11 = 43,979.44 : x
  2. Step 2: Convert to fraction form
    77,970.40/107,590.11 = 43,979.44/x
  3. Step 3: Cross multiply
    77,970.40x = 107,590.11 × 43,979.44
  4. Step 4: Simplify right side
    77,970.40x = 4,731,753,194.61
  5. Step 5: Solve for x
    x = 4,731,753,194.61/77,970.40
  6. Step 6: Final answer
    x = 60,686.53

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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.