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Finding the Fourth Proportional to 91,362.36, 126,067.84 and 51,071.08

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Solution

The fourth proportional to 91,362.36, 126,067.84 and 51,071.08 is: 70,471.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,362.36 : 126,067.84 = 51,071.08 : x
  2. Step 2: Convert to fraction form
    91,362.36/126,067.84 = 51,071.08/x
  3. Step 3: Cross multiply
    91,362.36x = 126,067.84 × 51,071.08
  4. Step 4: Simplify right side
    91,362.36x = 6,438,420,742.07
  5. Step 5: Solve for x
    x = 6,438,420,742.07/91,362.36
  6. Step 6: Final answer
    x = 70,471.26

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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.