Home / 86,379.06-129,513.12-36,445.50

Finding the Fourth Proportional to 86,379.06, 129,513.12 and 36,445.50

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Solution

The fourth proportional to 86,379.06, 129,513.12 and 36,445.50 is: 54,644.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,379.06 : 129,513.12 = 36,445.50 : x
  2. Step 2: Convert to fraction form
    86,379.06/129,513.12 = 36,445.50/x
  3. Step 3: Cross multiply
    86,379.06x = 129,513.12 × 36,445.50
  4. Step 4: Simplify right side
    86,379.06x = 4,720,170,414.96
  5. Step 5: Solve for x
    x = 4,720,170,414.96/86,379.06
  6. Step 6: Final answer
    x = 54,644.85

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1.5x scale

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.