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Finding the Fourth Proportional to 64,291.49, 88,765.61 and 40,129.26

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Solution

The fourth proportional to 64,291.49, 88,765.61 and 40,129.26 is: 55,405.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,291.49 : 88,765.61 = 40,129.26 : x
  2. Step 2: Convert to fraction form
    64,291.49/88,765.61 = 40,129.26/x
  3. Step 3: Cross multiply
    64,291.49x = 88,765.61 × 40,129.26
  4. Step 4: Simplify right side
    64,291.49x = 3,562,098,242.75
  5. Step 5: Solve for x
    x = 3,562,098,242.75/64,291.49
  6. Step 6: Final answer
    x = 55,405.44

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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.