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Finding the Fourth Proportional to 80,312.52, 120,305.16 and 38,064.54

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Solution

The fourth proportional to 80,312.52, 120,305.16 and 38,064.54 is: 57,019.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,312.52 : 120,305.16 = 38,064.54 : x
  2. Step 2: Convert to fraction form
    80,312.52/120,305.16 = 38,064.54/x
  3. Step 3: Cross multiply
    80,312.52x = 120,305.16 × 38,064.54
  4. Step 4: Simplify right side
    80,312.52x = 4,579,360,575.03
  5. Step 5: Solve for x
    x = 4,579,360,575.03/80,312.52
  6. Step 6: Final answer
    x = 57,019.26

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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.