Home / 81,328.13-112,207.25-45,512.45

Finding the Fourth Proportional to 81,328.13, 112,207.25 and 45,512.45

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Solution

The fourth proportional to 81,328.13, 112,207.25 and 45,512.45 is: 62,792.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,328.13 : 112,207.25 = 45,512.45 : x
  2. Step 2: Convert to fraction form
    81,328.13/112,207.25 = 45,512.45/x
  3. Step 3: Cross multiply
    81,328.13x = 112,207.25 × 45,512.45
  4. Step 4: Simplify right side
    81,328.13x = 5,106,826,627.70
  5. Step 5: Solve for x
    x = 5,106,826,627.70/81,328.13
  6. Step 6: Final answer
    x = 62,792.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.