Home / 81,191.20-112,054.42-45,388.66

Finding the Fourth Proportional to 81,191.20, 112,054.42 and 45,388.66

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Solution

The fourth proportional to 81,191.20, 112,054.42 and 45,388.66 is: 62,642.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,191.20 : 112,054.42 = 45,388.66 : x
  2. Step 2: Convert to fraction form
    81,191.20/112,054.42 = 45,388.66/x
  3. Step 3: Cross multiply
    81,191.20x = 112,054.42 × 45,388.66
  4. Step 4: Simplify right side
    81,191.20x = 5,085,999,970.88
  5. Step 5: Solve for x
    x = 5,085,999,970.88/81,191.20
  6. Step 6: Final answer
    x = 62,642.26

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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.