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Finding the Fourth Proportional to 40,656.76, 60,990 and 14,356.12

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Solution

The fourth proportional to 40,656.76, 60,990 and 14,356.12 is: 21,535.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,656.76 : 60,990 = 14,356.12 : x
  2. Step 2: Convert to fraction form
    40,656.76/60,990 = 14,356.12/x
  3. Step 3: Cross multiply
    40,656.76x = 60,990 × 14,356.12
  4. Step 4: Simplify right side
    40,656.76x = 875,579,758.80
  5. Step 5: Solve for x
    x = 875,579,758.80/40,656.76
  6. Step 6: Final answer
    x = 21,535.90

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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.