Home / 86,408.25-129,663.41-36,485.12

Finding the Fourth Proportional to 86,408.25, 129,663.41 and 36,485.12

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Solution

The fourth proportional to 86,408.25, 129,663.41 and 36,485.12 is: 54,749.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,408.25 : 129,663.41 = 36,485.12 : x
  2. Step 2: Convert to fraction form
    86,408.25/129,663.41 = 36,485.12/x
  3. Step 3: Cross multiply
    86,408.25x = 129,663.41 × 36,485.12
  4. Step 4: Simplify right side
    86,408.25x = 4,730,784,242.72
  5. Step 5: Solve for x
    x = 4,730,784,242.72/86,408.25
  6. Step 6: Final answer
    x = 54,749.22

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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.