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Finding the Fourth Proportional to 80,510.40, 120,765.56 and 25,106.40

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Solution

The fourth proportional to 80,510.40, 120,765.56 and 25,106.40 is: 37,659.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,510.40 : 120,765.56 = 25,106.40 : x
  2. Step 2: Convert to fraction form
    80,510.40/120,765.56 = 25,106.40/x
  3. Step 3: Cross multiply
    80,510.40x = 120,765.56 × 25,106.40
  4. Step 4: Simplify right side
    80,510.40x = 3,031,988,455.58
  5. Step 5: Solve for x
    x = 3,031,988,455.58/80,510.40
  6. Step 6: Final answer
    x = 37,659.59

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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.