Home / 80,528.19-120,767.67-38,386.05

Finding the Fourth Proportional to 80,528.19, 120,767.67 and 38,386.05

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Solution

The fourth proportional to 80,528.19, 120,767.67 and 38,386.05 is: 57,567.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,528.19 : 120,767.67 = 38,386.05 : x
  2. Step 2: Convert to fraction form
    80,528.19/120,767.67 = 38,386.05/x
  3. Step 3: Cross multiply
    80,528.19x = 120,767.67 × 38,386.05
  4. Step 4: Simplify right side
    80,528.19x = 4,635,793,819.00
  5. Step 5: Solve for x
    x = 4,635,793,819.00/80,528.19
  6. Step 6: Final answer
    x = 57,567.34

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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.