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Finding the Fourth Proportional to 64,343.79, 88,799.36 and 40,490.91

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Solution

The fourth proportional to 64,343.79, 88,799.36 and 40,490.91 is: 55,880.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,343.79 : 88,799.36 = 40,490.91 : x
  2. Step 2: Convert to fraction form
    64,343.79/88,799.36 = 40,490.91/x
  3. Step 3: Cross multiply
    64,343.79x = 88,799.36 × 40,490.91
  4. Step 4: Simplify right side
    64,343.79x = 3,595,566,691.36
  5. Step 5: Solve for x
    x = 3,595,566,691.36/64,343.79
  6. Step 6: Final answer
    x = 55,880.55

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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.