Home / 80,905.28-121,338.47-41,442.08

Finding the Fourth Proportional to 80,905.28, 121,338.47 and 41,442.08

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Solution

The fourth proportional to 80,905.28, 121,338.47 and 41,442.08 is: 62,153.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,905.28 : 121,338.47 = 41,442.08 : x
  2. Step 2: Convert to fraction form
    80,905.28/121,338.47 = 41,442.08/x
  3. Step 3: Cross multiply
    80,905.28x = 121,338.47 × 41,442.08
  4. Step 4: Simplify right side
    80,905.28x = 5,028,518,077.73
  5. Step 5: Solve for x
    x = 5,028,518,077.73/80,905.28
  6. Step 6: Final answer
    x = 62,153.15

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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.