Home / 81,445.44-112,401.60-45,634.92

Finding the Fourth Proportional to 81,445.44, 112,401.60 and 45,634.92

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Solution

The fourth proportional to 81,445.44, 112,401.60 and 45,634.92 is: 62,980.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,445.44 : 112,401.60 = 45,634.92 : x
  2. Step 2: Convert to fraction form
    81,445.44/112,401.60 = 45,634.92/x
  3. Step 3: Cross multiply
    81,445.44x = 112,401.60 × 45,634.92
  4. Step 4: Simplify right side
    81,445.44x = 5,129,438,023.87
  5. Step 5: Solve for x
    x = 5,129,438,023.87/81,445.44
  6. Step 6: Final answer
    x = 62,980.05

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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.