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Finding the Fourth Proportional to 40,352.63, 60,538.66 and 12,650.63

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Solution

The fourth proportional to 40,352.63, 60,538.66 and 12,650.63 is: 18,978.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,352.63 : 60,538.66 = 12,650.63 : x
  2. Step 2: Convert to fraction form
    40,352.63/60,538.66 = 12,650.63/x
  3. Step 3: Cross multiply
    40,352.63x = 60,538.66 × 12,650.63
  4. Step 4: Simplify right side
    40,352.63x = 765,851,854.04
  5. Step 5: Solve for x
    x = 765,851,854.04/40,352.63
  6. Step 6: Final answer
    x = 18,978.98

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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.