Home / 83,868.84-115,741.20-45,630.78

Finding the Fourth Proportional to 83,868.84, 115,741.20 and 45,630.78

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Solution

The fourth proportional to 83,868.84, 115,741.20 and 45,630.78 is: 62,971.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,868.84 : 115,741.20 = 45,630.78 : x
  2. Step 2: Convert to fraction form
    83,868.84/115,741.20 = 45,630.78/x
  3. Step 3: Cross multiply
    83,868.84x = 115,741.20 × 45,630.78
  4. Step 4: Simplify right side
    83,868.84x = 5,281,361,234.14
  5. Step 5: Solve for x
    x = 5,281,361,234.14/83,868.84
  6. Step 6: Final answer
    x = 62,971.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.