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Finding the Fourth Proportional to 65,507.78, 98,179.44 and 28,023.80

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Solution

The fourth proportional to 65,507.78, 98,179.44 and 28,023.80 is: 42,000.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,507.78 : 98,179.44 = 28,023.80 : x
  2. Step 2: Convert to fraction form
    65,507.78/98,179.44 = 28,023.80/x
  3. Step 3: Cross multiply
    65,507.78x = 98,179.44 × 28,023.80
  4. Step 4: Simplify right side
    65,507.78x = 2,751,360,990.67
  5. Step 5: Solve for x
    x = 2,751,360,990.67/65,507.78
  6. Step 6: Final answer
    x = 42,000.52

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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.