Home / 80,919.48-121,219.02-38,166.36

Finding the Fourth Proportional to 80,919.48, 121,219.02 and 38,166.36

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Solution

The fourth proportional to 80,919.48, 121,219.02 and 38,166.36 is: 57,173.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,919.48 : 121,219.02 = 38,166.36 : x
  2. Step 2: Convert to fraction form
    80,919.48/121,219.02 = 38,166.36/x
  3. Step 3: Cross multiply
    80,919.48x = 121,219.02 × 38,166.36
  4. Step 4: Simplify right side
    80,919.48x = 4,626,488,756.17
  5. Step 5: Solve for x
    x = 4,626,488,756.17/80,919.48
  6. Step 6: Final answer
    x = 57,173.98

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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.