Home / 81,867.04-112,486.92-65,070.88

Finding the Fourth Proportional to 81,867.04, 112,486.92 and 65,070.88

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Solution

The fourth proportional to 81,867.04, 112,486.92 and 65,070.88 is: 89,408.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,867.04 : 112,486.92 = 65,070.88 : x
  2. Step 2: Convert to fraction form
    81,867.04/112,486.92 = 65,070.88/x
  3. Step 3: Cross multiply
    81,867.04x = 112,486.92 × 65,070.88
  4. Step 4: Simplify right side
    81,867.04x = 7,319,622,872.89
  5. Step 5: Solve for x
    x = 7,319,622,872.89/81,867.04
  6. Step 6: Final answer
    x = 89,408.67

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.