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Finding the Fourth Proportional to 65,695.68, 98,543.52 and 28,267.20

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Solution

The fourth proportional to 65,695.68, 98,543.52 and 28,267.20 is: 42,400.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,695.68 : 98,543.52 = 28,267.20 : x
  2. Step 2: Convert to fraction form
    65,695.68/98,543.52 = 28,267.20/x
  3. Step 3: Cross multiply
    65,695.68x = 98,543.52 × 28,267.20
  4. Step 4: Simplify right side
    65,695.68x = 2,785,549,388.54
  5. Step 5: Solve for x
    x = 2,785,549,388.54/65,695.68
  6. Step 6: Final answer
    x = 42,400.80

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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.