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Finding the Fourth Proportional to 80,322.76, 120,525.45 and 38,250.55

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Solution

The fourth proportional to 80,322.76, 120,525.45 and 38,250.55 is: 57,395.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,322.76 : 120,525.45 = 38,250.55 : x
  2. Step 2: Convert to fraction form
    80,322.76/120,525.45 = 38,250.55/x
  3. Step 3: Cross multiply
    80,322.76x = 120,525.45 × 38,250.55
  4. Step 4: Simplify right side
    80,322.76x = 4,610,164,751.50
  5. Step 5: Solve for x
    x = 4,610,164,751.50/80,322.76
  6. Step 6: Final answer
    x = 57,395.50

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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.