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Finding the Fourth Proportional to 40,354.98, 60,542.18 and 12,652.98

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Solution

The fourth proportional to 40,354.98, 60,542.18 and 12,652.98 is: 18,982.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,354.98 : 60,542.18 = 12,652.98 : x
  2. Step 2: Convert to fraction form
    40,354.98/60,542.18 = 12,652.98/x
  3. Step 3: Cross multiply
    40,354.98x = 60,542.18 × 12,652.98
  4. Step 4: Simplify right side
    40,354.98x = 766,038,929.43
  5. Step 5: Solve for x
    x = 766,038,929.43/40,354.98
  6. Step 6: Final answer
    x = 18,982.51

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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.