Home / 77,979.40-107,610.06-45,721.96

Finding the Fourth Proportional to 77,979.40, 107,610.06 and 45,721.96

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Solution

The fourth proportional to 77,979.40, 107,610.06 and 45,721.96 is: 63,095.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,979.40 : 107,610.06 = 45,721.96 : x
  2. Step 2: Convert to fraction form
    77,979.40/107,610.06 = 45,721.96/x
  3. Step 3: Cross multiply
    77,979.40x = 107,610.06 × 45,721.96
  4. Step 4: Simplify right side
    77,979.40x = 4,920,142,858.92
  5. Step 5: Solve for x
    x = 4,920,142,858.92/77,979.40
  6. Step 6: Final answer
    x = 63,095.42

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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.