Home / 65,620.10-98,442.30-21,248.30

Finding the Fourth Proportional to 65,620.10, 98,442.30 and 21,248.30

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Solution

The fourth proportional to 65,620.10, 98,442.30 and 21,248.30 is: 31,876.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,620.10 : 98,442.30 = 21,248.30 : x
  2. Step 2: Convert to fraction form
    65,620.10/98,442.30 = 21,248.30/x
  3. Step 3: Cross multiply
    65,620.10x = 98,442.30 × 21,248.30
  4. Step 4: Simplify right side
    65,620.10x = 2,091,731,523.09
  5. Step 5: Solve for x
    x = 2,091,731,523.09/65,620.10
  6. Step 6: Final answer
    x = 31,876.38

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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.