Home / 81,923.76-122,962.68-42,508.80

Finding the Fourth Proportional to 81,923.76, 122,962.68 and 42,508.80

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Solution

The fourth proportional to 81,923.76, 122,962.68 and 42,508.80 is: 63,803.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,923.76 : 122,962.68 = 42,508.80 : x
  2. Step 2: Convert to fraction form
    81,923.76/122,962.68 = 42,508.80/x
  3. Step 3: Cross multiply
    81,923.76x = 122,962.68 × 42,508.80
  4. Step 4: Simplify right side
    81,923.76x = 5,226,995,971.58
  5. Step 5: Solve for x
    x = 5,226,995,971.58/81,923.76
  6. Step 6: Final answer
    x = 63,803.17

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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.