Home / 84,647.20-127,116.60-45,281.20

Finding the Fourth Proportional to 84,647.20, 127,116.60 and 45,281.20

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Solution

The fourth proportional to 84,647.20, 127,116.60 and 45,281.20 is: 67,999.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,647.20 : 127,116.60 = 45,281.20 : x
  2. Step 2: Convert to fraction form
    84,647.20/127,116.60 = 45,281.20/x
  3. Step 3: Cross multiply
    84,647.20x = 127,116.60 × 45,281.20
  4. Step 4: Simplify right side
    84,647.20x = 5,755,992,187.92
  5. Step 5: Solve for x
    x = 5,755,992,187.92/84,647.20
  6. Step 6: Final answer
    x = 67,999.79

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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.