Home / 80,479.43-120,798.63-60,419.18

Finding the Fourth Proportional to 80,479.43, 120,798.63 and 60,419.18

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Solution

The fourth proportional to 80,479.43, 120,798.63 and 60,419.18 is: 90,688.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,479.43 : 120,798.63 = 60,419.18 : x
  2. Step 2: Convert to fraction form
    80,479.43/120,798.63 = 60,419.18/x
  3. Step 3: Cross multiply
    80,479.43x = 120,798.63 × 60,419.18
  4. Step 4: Simplify right side
    80,479.43x = 7,298,554,169.72
  5. Step 5: Solve for x
    x = 7,298,554,169.72/80,479.43
  6. Step 6: Final answer
    x = 90,688.44

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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.