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Finding the Fourth Proportional to 88,309.71, 121,864.86 and 50,072.94

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Solution

The fourth proportional to 88,309.71, 121,864.86 and 50,072.94 is: 69,099.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,309.71 : 121,864.86 = 50,072.94 : x
  2. Step 2: Convert to fraction form
    88,309.71/121,864.86 = 50,072.94/x
  3. Step 3: Cross multiply
    88,309.71x = 121,864.86 × 50,072.94
  4. Step 4: Simplify right side
    88,309.71x = 6,102,131,822.89
  5. Step 5: Solve for x
    x = 6,102,131,822.89/88,309.71
  6. Step 6: Final answer
    x = 69,099.22

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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.