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Finding the Fourth Proportional to 26,925.60, 40,420.80 and 26,731.20

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Solution

The fourth proportional to 26,925.60, 40,420.80 and 26,731.20 is: 40,128.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,925.60 : 40,420.80 = 26,731.20 : x
  2. Step 2: Convert to fraction form
    26,925.60/40,420.80 = 26,731.20/x
  3. Step 3: Cross multiply
    26,925.60x = 40,420.80 × 26,731.20
  4. Step 4: Simplify right side
    26,925.60x = 1,080,496,488.96
  5. Step 5: Solve for x
    x = 1,080,496,488.96/26,925.60
  6. Step 6: Final answer
    x = 40,128.97

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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.