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Finding the Fourth Proportional to 88,384.74, 121,936.08 and 65,470.38

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Solution

The fourth proportional to 88,384.74, 121,936.08 and 65,470.38 is: 90,323.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,384.74 : 121,936.08 = 65,470.38 : x
  2. Step 2: Convert to fraction form
    88,384.74/121,936.08 = 65,470.38/x
  3. Step 3: Cross multiply
    88,384.74x = 121,936.08 × 65,470.38
  4. Step 4: Simplify right side
    88,384.74x = 7,983,201,493.31
  5. Step 5: Solve for x
    x = 7,983,201,493.31/88,384.74
  6. Step 6: Final answer
    x = 90,323.30

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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.