Home / 80,528.44-120,768.05-38,386.30

Finding the Fourth Proportional to 80,528.44, 120,768.05 and 38,386.30

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Solution

The fourth proportional to 80,528.44, 120,768.05 and 38,386.30 is: 57,567.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,528.44 : 120,768.05 = 38,386.30 : x
  2. Step 2: Convert to fraction form
    80,528.44/120,768.05 = 38,386.30/x
  3. Step 3: Cross multiply
    80,528.44x = 120,768.05 × 38,386.30
  4. Step 4: Simplify right side
    80,528.44x = 4,635,838,405.78
  5. Step 5: Solve for x
    x = 4,635,838,405.78/80,528.44
  6. Step 6: Final answer
    x = 57,567.72

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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.