Home / 85,085.24-127,641.69-28,930.37

Finding the Fourth Proportional to 85,085.24, 127,641.69 and 28,930.37

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Solution

The fourth proportional to 85,085.24, 127,641.69 and 28,930.37 is: 43,400.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,085.24 : 127,641.69 = 28,930.37 : x
  2. Step 2: Convert to fraction form
    85,085.24/127,641.69 = 28,930.37/x
  3. Step 3: Cross multiply
    85,085.24x = 127,641.69 × 28,930.37
  4. Step 4: Simplify right side
    85,085.24x = 3,692,720,680.92
  5. Step 5: Solve for x
    x = 3,692,720,680.92/85,085.24
  6. Step 6: Final answer
    x = 43,400.25

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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.