Home / 86,764.20-130,189.86-34,211.40

Finding the Fourth Proportional to 86,764.20, 130,189.86 and 34,211.40

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Solution

The fourth proportional to 86,764.20, 130,189.86 and 34,211.40 is: 51,334.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,764.20 : 130,189.86 = 34,211.40 : x
  2. Step 2: Convert to fraction form
    86,764.20/130,189.86 = 34,211.40/x
  3. Step 3: Cross multiply
    86,764.20x = 130,189.86 × 34,211.40
  4. Step 4: Simplify right side
    86,764.20x = 4,453,977,376.40
  5. Step 5: Solve for x
    x = 4,453,977,376.40/86,764.20
  6. Step 6: Final answer
    x = 51,334.28

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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.