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Finding the Fourth Proportional to 64,207.70, 88,662.93 and 40,375.70

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Solution

The fourth proportional to 64,207.70, 88,662.93 and 40,375.70 is: 55,753.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,207.70 : 88,662.93 = 40,375.70 : x
  2. Step 2: Convert to fraction form
    64,207.70/88,662.93 = 40,375.70/x
  3. Step 3: Cross multiply
    64,207.70x = 88,662.93 × 40,375.70
  4. Step 4: Simplify right side
    64,207.70x = 3,579,827,862.80
  5. Step 5: Solve for x
    x = 3,579,827,862.80/64,207.70
  6. Step 6: Final answer
    x = 55,753.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.