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Finding the Fourth Proportional to 86,366.64, 129,539 and 30,204.48

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Solution

The fourth proportional to 86,366.64, 129,539 and 30,204.48 is: 45,302.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,366.64 : 129,539 = 30,204.48 : x
  2. Step 2: Convert to fraction form
    86,366.64/129,539 = 30,204.48/x
  3. Step 3: Cross multiply
    86,366.64x = 129,539 × 30,204.48
  4. Step 4: Simplify right side
    86,366.64x = 3,912,658,134.72
  5. Step 5: Solve for x
    x = 3,912,658,134.72/86,366.64
  6. Step 6: Final answer
    x = 45,302.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.