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Finding the Fourth Proportional to 69,951.71, 96,509.67 and 42,717.86

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Solution

The fourth proportional to 69,951.71, 96,509.67 and 42,717.86 is: 58,936.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,951.71 : 96,509.67 = 42,717.86 : x
  2. Step 2: Convert to fraction form
    69,951.71/96,509.67 = 42,717.86/x
  3. Step 3: Cross multiply
    69,951.71x = 96,509.67 × 42,717.86
  4. Step 4: Simplify right side
    69,951.71x = 4,122,686,571.71
  5. Step 5: Solve for x
    x = 4,122,686,571.71/69,951.71
  6. Step 6: Final answer
    x = 58,936.18

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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.