Home / 65,456.13-98,181.46-21,081.90

Finding the Fourth Proportional to 65,456.13, 98,181.46 and 21,081.90

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Solution

The fourth proportional to 65,456.13, 98,181.46 and 21,081.90 is: 31,621.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,456.13 : 98,181.46 = 21,081.90 : x
  2. Step 2: Convert to fraction form
    65,456.13/98,181.46 = 21,081.90/x
  3. Step 3: Cross multiply
    65,456.13x = 98,181.46 × 21,081.90
  4. Step 4: Simplify right side
    65,456.13x = 2,069,851,721.57
  5. Step 5: Solve for x
    x = 2,069,851,721.57/65,456.13
  6. Step 6: Final answer
    x = 31,621.97

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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.