Home / 79,678.24-109,949.76-45,686.32

Finding the Fourth Proportional to 79,678.24, 109,949.76 and 45,686.32

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Solution

The fourth proportional to 79,678.24, 109,949.76 and 45,686.32 is: 63,043.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,678.24 : 109,949.76 = 45,686.32 : x
  2. Step 2: Convert to fraction form
    79,678.24/109,949.76 = 45,686.32/x
  3. Step 3: Cross multiply
    79,678.24x = 109,949.76 × 45,686.32
  4. Step 4: Simplify right side
    79,678.24x = 5,023,199,919.28
  5. Step 5: Solve for x
    x = 5,023,199,919.28/79,678.24
  6. Step 6: Final answer
    x = 63,043.56

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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.