Home / 85,023.10-127,530.60-28,857.70

Finding the Fourth Proportional to 85,023.10, 127,530.60 and 28,857.70

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Solution

The fourth proportional to 85,023.10, 127,530.60 and 28,857.70 is: 43,285.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,023.10 : 127,530.60 = 28,857.70 : x
  2. Step 2: Convert to fraction form
    85,023.10/127,530.60 = 28,857.70/x
  3. Step 3: Cross multiply
    85,023.10x = 127,530.60 × 28,857.70
  4. Step 4: Simplify right side
    85,023.10x = 3,680,239,795.62
  5. Step 5: Solve for x
    x = 3,680,239,795.62/85,023.10
  6. Step 6: Final answer
    x = 43,285.18

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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.