Home / 65,442.12-98,153.40-21,063

Finding the Fourth Proportional to 65,442.12, 98,153.40 and 21,063

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Solution

The fourth proportional to 65,442.12, 98,153.40 and 21,063 is: 31,591.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,442.12 : 98,153.40 = 21,063 : x
  2. Step 2: Convert to fraction form
    65,442.12/98,153.40 = 21,063/x
  3. Step 3: Cross multiply
    65,442.12x = 98,153.40 × 21,063
  4. Step 4: Simplify right side
    65,442.12x = 2,067,405,064.20
  5. Step 5: Solve for x
    x = 2,067,405,064.20/65,442.12
  6. Step 6: Final answer
    x = 31,591.35

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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.