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Finding the Fourth Proportional to 71,223.86, 98,192.74 and 45,685.88

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Solution

The fourth proportional to 71,223.86, 98,192.74 and 45,685.88 is: 62,984.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,223.86 : 98,192.74 = 45,685.88 : x
  2. Step 2: Convert to fraction form
    71,223.86/98,192.74 = 45,685.88/x
  3. Step 3: Cross multiply
    71,223.86x = 98,192.74 × 45,685.88
  4. Step 4: Simplify right side
    71,223.86x = 4,486,021,867.78
  5. Step 5: Solve for x
    x = 4,486,021,867.78/71,223.86
  6. Step 6: Final answer
    x = 62,984.82

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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.