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Finding the Fourth Proportional to 65,716.92, 98,565.66 and 21,345.12

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Solution

The fourth proportional to 65,716.92, 98,565.66 and 21,345.12 is: 32,014.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,716.92 : 98,565.66 = 21,345.12 : x
  2. Step 2: Convert to fraction form
    65,716.92/98,565.66 = 21,345.12/x
  3. Step 3: Cross multiply
    65,716.92x = 98,565.66 × 21,345.12
  4. Step 4: Simplify right side
    65,716.92x = 2,103,895,840.58
  5. Step 5: Solve for x
    x = 2,103,895,840.58/65,716.92
  6. Step 6: Final answer
    x = 32,014.52

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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.