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Finding the Fourth Proportional to 88,361.72, 121,947.29 and 50,133.71

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Solution

The fourth proportional to 88,361.72, 121,947.29 and 50,133.71 is: 69,189.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,361.72 : 121,947.29 = 50,133.71 : x
  2. Step 2: Convert to fraction form
    88,361.72/121,947.29 = 50,133.71/x
  3. Step 3: Cross multiply
    88,361.72x = 121,947.29 × 50,133.71
  4. Step 4: Simplify right side
    88,361.72x = 6,113,670,314.35
  5. Step 5: Solve for x
    x = 6,113,670,314.35/88,361.72
  6. Step 6: Final answer
    x = 69,189.13

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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.