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Finding the Fourth Proportional to 65,875.91, 98,584.02 and 53,891.15

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Solution

The fourth proportional to 65,875.91, 98,584.02 and 53,891.15 is: 80,648.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,875.91 : 98,584.02 = 53,891.15 : x
  2. Step 2: Convert to fraction form
    65,875.91/98,584.02 = 53,891.15/x
  3. Step 3: Cross multiply
    65,875.91x = 98,584.02 × 53,891.15
  4. Step 4: Simplify right side
    65,875.91x = 5,312,805,716.50
  5. Step 5: Solve for x
    x = 5,312,805,716.50/65,875.91
  6. Step 6: Final answer
    x = 80,648.69

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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.