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Finding the Fourth Proportional to 65,387.46, 98,080.50 and 21,014.25

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Solution

The fourth proportional to 65,387.46, 98,080.50 and 21,014.25 is: 31,521.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,387.46 : 98,080.50 = 21,014.25 : x
  2. Step 2: Convert to fraction form
    65,387.46/98,080.50 = 21,014.25/x
  3. Step 3: Cross multiply
    65,387.46x = 98,080.50 × 21,014.25
  4. Step 4: Simplify right side
    65,387.46x = 2,061,088,147.13
  5. Step 5: Solve for x
    x = 2,061,088,147.13/65,387.46
  6. Step 6: Final answer
    x = 31,521.15

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.