Home / 85,145.85-127,734.30-28,983.29

Finding the Fourth Proportional to 85,145.85, 127,734.30 and 28,983.29

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Solution

The fourth proportional to 85,145.85, 127,734.30 and 28,983.29 is: 43,480.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,145.85 : 127,734.30 = 28,983.29 : x
  2. Step 2: Convert to fraction form
    85,145.85/127,734.30 = 28,983.29/x
  3. Step 3: Cross multiply
    85,145.85x = 127,734.30 × 28,983.29
  4. Step 4: Simplify right side
    85,145.85x = 3,702,159,621.18
  5. Step 5: Solve for x
    x = 3,702,159,621.18/85,145.85
  6. Step 6: Final answer
    x = 43,480.21

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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.