Home / 85,235.92-127,890.75-45,746.90

Finding the Fourth Proportional to 85,235.92, 127,890.75 and 45,746.90

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Solution

The fourth proportional to 85,235.92, 127,890.75 and 45,746.90 is: 68,640.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,235.92 : 127,890.75 = 45,746.90 : x
  2. Step 2: Convert to fraction form
    85,235.92/127,890.75 = 45,746.90/x
  3. Step 3: Cross multiply
    85,235.92x = 127,890.75 × 45,746.90
  4. Step 4: Simplify right side
    85,235.92x = 5,850,605,351.18
  5. Step 5: Solve for x
    x = 5,850,605,351.18/85,235.92
  6. Step 6: Final answer
    x = 68,640.14

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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.