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Finding the Fourth Proportional to 64,366.88, 88,796.16 and 40,148

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Solution

The fourth proportional to 64,366.88, 88,796.16 and 40,148 is: 55,385.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,366.88 : 88,796.16 = 40,148 : x
  2. Step 2: Convert to fraction form
    64,366.88/88,796.16 = 40,148/x
  3. Step 3: Cross multiply
    64,366.88x = 88,796.16 × 40,148
  4. Step 4: Simplify right side
    64,366.88x = 3,564,988,231.68
  5. Step 5: Solve for x
    x = 3,564,988,231.68/64,366.88
  6. Step 6: Final answer
    x = 55,385.44

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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.