Home / 90,909.78-136,421.46-34,754.64

Finding the Fourth Proportional to 90,909.78, 136,421.46 and 34,754.64

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Solution

The fourth proportional to 90,909.78, 136,421.46 and 34,754.64 is: 52,153.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,909.78 : 136,421.46 = 34,754.64 : x
  2. Step 2: Convert to fraction form
    90,909.78/136,421.46 = 34,754.64/x
  3. Step 3: Cross multiply
    90,909.78x = 136,421.46 × 34,754.64
  4. Step 4: Simplify right side
    90,909.78x = 4,741,278,730.57
  5. Step 5: Solve for x
    x = 4,741,278,730.57/90,909.78
  6. Step 6: Final answer
    x = 52,153.67

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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.