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Finding the Fourth Proportional to 86,064.60, 129,058.02 and 30,662.04

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Solution

The fourth proportional to 86,064.60, 129,058.02 and 30,662.04 is: 45,979.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,064.60 : 129,058.02 = 30,662.04 : x
  2. Step 2: Convert to fraction form
    86,064.60/129,058.02 = 30,662.04/x
  3. Step 3: Cross multiply
    86,064.60x = 129,058.02 × 30,662.04
  4. Step 4: Simplify right side
    86,064.60x = 3,957,182,171.56
  5. Step 5: Solve for x
    x = 3,957,182,171.56/86,064.60
  6. Step 6: Final answer
    x = 45,979.21

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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.