Home / 80,239.38-120,400.05-53,603.58

Finding the Fourth Proportional to 80,239.38, 120,400.05 and 53,603.58

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Solution

The fourth proportional to 80,239.38, 120,400.05 and 53,603.58 is: 80,432.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,239.38 : 120,400.05 = 53,603.58 : x
  2. Step 2: Convert to fraction form
    80,239.38/120,400.05 = 53,603.58/x
  3. Step 3: Cross multiply
    80,239.38x = 120,400.05 × 53,603.58
  4. Step 4: Simplify right side
    80,239.38x = 6,453,873,712.18
  5. Step 5: Solve for x
    x = 6,453,873,712.18/80,239.38
  6. Step 6: Final answer
    x = 80,432.75

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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.