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Finding the Fourth Proportional to 80,656.91, 121,009.98 and 41,241.71

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Solution

The fourth proportional to 80,656.91, 121,009.98 and 41,241.71 is: 61,875.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,656.91 : 121,009.98 = 41,241.71 : x
  2. Step 2: Convert to fraction form
    80,656.91/121,009.98 = 41,241.71/x
  3. Step 3: Cross multiply
    80,656.91x = 121,009.98 × 41,241.71
  4. Step 4: Simplify right side
    80,656.91x = 4,990,658,502.27
  5. Step 5: Solve for x
    x = 4,990,658,502.27/80,656.91
  6. Step 6: Final answer
    x = 61,875.15

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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.