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Finding the Fourth Proportional to 64,381.44, 88,868.16 and 40,548

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Solution

The fourth proportional to 64,381.44, 88,868.16 and 40,548 is: 55,969.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,381.44 : 88,868.16 = 40,548 : x
  2. Step 2: Convert to fraction form
    64,381.44/88,868.16 = 40,548/x
  3. Step 3: Cross multiply
    64,381.44x = 88,868.16 × 40,548
  4. Step 4: Simplify right side
    64,381.44x = 3,603,426,151.68
  5. Step 5: Solve for x
    x = 3,603,426,151.68/64,381.44
  6. Step 6: Final answer
    x = 55,969.95

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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.