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Finding the Fourth Proportional to 26,899.60, 40,381.80 and 26,705.20

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Solution

The fourth proportional to 26,899.60, 40,381.80 and 26,705.20 is: 40,089.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,899.60 : 40,381.80 = 26,705.20 : x
  2. Step 2: Convert to fraction form
    26,899.60/40,381.80 = 26,705.20/x
  3. Step 3: Cross multiply
    26,899.60x = 40,381.80 × 26,705.20
  4. Step 4: Simplify right side
    26,899.60x = 1,078,404,045.36
  5. Step 5: Solve for x
    x = 1,078,404,045.36/26,899.60
  6. Step 6: Final answer
    x = 40,089.97

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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.