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Finding the Fourth Proportional to 40,620.79, 60,941.62 and 16,920.50

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Solution

The fourth proportional to 40,620.79, 60,941.62 and 16,920.50 is: 25,385.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,620.79 : 60,941.62 = 16,920.50 : x
  2. Step 2: Convert to fraction form
    40,620.79/60,941.62 = 16,920.50/x
  3. Step 3: Cross multiply
    40,620.79x = 60,941.62 × 16,920.50
  4. Step 4: Simplify right side
    40,620.79x = 1,031,162,302.47
  5. Step 5: Solve for x
    x = 1,031,162,302.47/40,620.79
  6. Step 6: Final answer
    x = 25,385.09

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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.