Home / 99,661.20-149,488.56-40,479.36

Finding the Fourth Proportional to 99,661.20, 149,488.56 and 40,479.36

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Solution

The fourth proportional to 99,661.20, 149,488.56 and 40,479.36 is: 60,717.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,661.20 : 149,488.56 = 40,479.36 : x
  2. Step 2: Convert to fraction form
    99,661.20/149,488.56 = 40,479.36/x
  3. Step 3: Cross multiply
    99,661.20x = 149,488.56 × 40,479.36
  4. Step 4: Simplify right side
    99,661.20x = 6,051,201,236.12
  5. Step 5: Solve for x
    x = 6,051,201,236.12/99,661.20
  6. Step 6: Final answer
    x = 60,717.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.