Home / 85,540.68-128,278.08-29,370.24

Finding the Fourth Proportional to 85,540.68, 128,278.08 and 29,370.24

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Solution

The fourth proportional to 85,540.68, 128,278.08 and 29,370.24 is: 44,044.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,540.68 : 128,278.08 = 29,370.24 : x
  2. Step 2: Convert to fraction form
    85,540.68/128,278.08 = 29,370.24/x
  3. Step 3: Cross multiply
    85,540.68x = 128,278.08 × 29,370.24
  4. Step 4: Simplify right side
    85,540.68x = 3,767,557,996.34
  5. Step 5: Solve for x
    x = 3,767,557,996.34/85,540.68
  6. Step 6: Final answer
    x = 44,044.05

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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.