Home / 80,907.30-121,296.15-34,121.70

Finding the Fourth Proportional to 80,907.30, 121,296.15 and 34,121.70

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Solution

The fourth proportional to 80,907.30, 121,296.15 and 34,121.70 is: 51,155.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,907.30 : 121,296.15 = 34,121.70 : x
  2. Step 2: Convert to fraction form
    80,907.30/121,296.15 = 34,121.70/x
  3. Step 3: Cross multiply
    80,907.30x = 121,296.15 × 34,121.70
  4. Step 4: Simplify right side
    80,907.30x = 4,138,830,841.46
  5. Step 5: Solve for x
    x = 4,138,830,841.46/80,907.30
  6. Step 6: Final answer
    x = 51,155.22

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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.