Home / 81,023.90-111,812.82-45,211.77

Finding the Fourth Proportional to 81,023.90, 111,812.82 and 45,211.77

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Solution

The fourth proportional to 81,023.90, 111,812.82 and 45,211.77 is: 62,392.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,023.90 : 111,812.82 = 45,211.77 : x
  2. Step 2: Convert to fraction form
    81,023.90/111,812.82 = 45,211.77/x
  3. Step 3: Cross multiply
    81,023.90x = 111,812.82 × 45,211.77
  4. Step 4: Simplify right side
    81,023.90x = 5,055,255,750.65
  5. Step 5: Solve for x
    x = 5,055,255,750.65/81,023.90
  6. Step 6: Final answer
    x = 62,392.16

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1.5x scale

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.