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Finding the Fourth Proportional to 71,850, 99,156.03 and 40,018.89

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Solution

The fourth proportional to 71,850, 99,156.03 and 40,018.89 is: 55,227.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,850 : 99,156.03 = 40,018.89 : x
  2. Step 2: Convert to fraction form
    71,850/99,156.03 = 40,018.89/x
  3. Step 3: Cross multiply
    71,850x = 99,156.03 × 40,018.89
  4. Step 4: Simplify right side
    71,850x = 3,968,114,257.41
  5. Step 5: Solve for x
    x = 3,968,114,257.41/71,850
  6. Step 6: Final answer
    x = 55,227.76

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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.