Home / 81,803.08-122,770.25-42,371.47

Finding the Fourth Proportional to 81,803.08, 122,770.25 and 42,371.47

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Solution

The fourth proportional to 81,803.08, 122,770.25 and 42,371.47 is: 63,591.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,803.08 : 122,770.25 = 42,371.47 : x
  2. Step 2: Convert to fraction form
    81,803.08/122,770.25 = 42,371.47/x
  3. Step 3: Cross multiply
    81,803.08x = 122,770.25 × 42,371.47
  4. Step 4: Simplify right side
    81,803.08x = 5,201,955,964.77
  5. Step 5: Solve for x
    x = 5,201,955,964.77/81,803.08
  6. Step 6: Final answer
    x = 63,591.20

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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.