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Finding the Fourth Proportional to 63,561.93, 87,706.29 and 40,931.61

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Solution

The fourth proportional to 63,561.93, 87,706.29 and 40,931.61 is: 56,479.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,561.93 : 87,706.29 = 40,931.61 : x
  2. Step 2: Convert to fraction form
    63,561.93/87,706.29 = 40,931.61/x
  3. Step 3: Cross multiply
    63,561.93x = 87,706.29 × 40,931.61
  4. Step 4: Simplify right side
    63,561.93x = 3,589,959,656.83
  5. Step 5: Solve for x
    x = 3,589,959,656.83/63,561.93
  6. Step 6: Final answer
    x = 56,479.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.