Home / 80,278.02-120,231.72-57,648.06

Finding the Fourth Proportional to 80,278.02, 120,231.72 and 57,648.06

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Solution

The fourth proportional to 80,278.02, 120,231.72 and 57,648.06 is: 86,339.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,278.02 : 120,231.72 = 57,648.06 : x
  2. Step 2: Convert to fraction form
    80,278.02/120,231.72 = 57,648.06/x
  3. Step 3: Cross multiply
    80,278.02x = 120,231.72 × 57,648.06
  4. Step 4: Simplify right side
    80,278.02x = 6,931,125,408.46
  5. Step 5: Solve for x
    x = 6,931,125,408.46/80,278.02
  6. Step 6: Final answer
    x = 86,339.02

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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.