Home / 81,646.16-122,355.20-44,125.36

Finding the Fourth Proportional to 81,646.16, 122,355.20 and 44,125.36

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Solution

The fourth proportional to 81,646.16, 122,355.20 and 44,125.36 is: 66,126.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,646.16 : 122,355.20 = 44,125.36 : x
  2. Step 2: Convert to fraction form
    81,646.16/122,355.20 = 44,125.36/x
  3. Step 3: Cross multiply
    81,646.16x = 122,355.20 × 44,125.36
  4. Step 4: Simplify right side
    81,646.16x = 5,398,967,247.87
  5. Step 5: Solve for x
    x = 5,398,967,247.87/81,646.16
  6. Step 6: Final answer
    x = 66,126.41

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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.