Home / 65,455.13-98,179.96-21,080.90

Finding the Fourth Proportional to 65,455.13, 98,179.96 and 21,080.90

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Solution

The fourth proportional to 65,455.13, 98,179.96 and 21,080.90 is: 31,620.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,455.13 : 98,179.96 = 21,080.90 : x
  2. Step 2: Convert to fraction form
    65,455.13/98,179.96 = 21,080.90/x
  3. Step 3: Cross multiply
    65,455.13x = 98,179.96 × 21,080.90
  4. Step 4: Simplify right side
    65,455.13x = 2,069,721,918.76
  5. Step 5: Solve for x
    x = 2,069,721,918.76/65,455.13
  6. Step 6: Final answer
    x = 31,620.47

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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.