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Finding the Fourth Proportional to 40,116.71, 55,362.79 and 22,211.71

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Solution

The fourth proportional to 40,116.71, 55,362.79 and 22,211.71 is: 30,653.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,116.71 : 55,362.79 = 22,211.71 : x
  2. Step 2: Convert to fraction form
    40,116.71/55,362.79 = 22,211.71/x
  3. Step 3: Cross multiply
    40,116.71x = 55,362.79 × 22,211.71
  4. Step 4: Simplify right side
    40,116.71x = 1,229,702,291.38
  5. Step 5: Solve for x
    x = 1,229,702,291.38/40,116.71
  6. Step 6: Final answer
    x = 30,653.12

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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.