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Finding the Fourth Proportional to 69,835.65, 96,421.41 and 65,374.17

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Solution

The fourth proportional to 69,835.65, 96,421.41 and 65,374.17 is: 90,261.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,835.65 : 96,421.41 = 65,374.17 : x
  2. Step 2: Convert to fraction form
    69,835.65/96,421.41 = 65,374.17/x
  3. Step 3: Cross multiply
    69,835.65x = 96,421.41 × 65,374.17
  4. Step 4: Simplify right side
    69,835.65x = 6,303,469,648.98
  5. Step 5: Solve for x
    x = 6,303,469,648.98/69,835.65
  6. Step 6: Final answer
    x = 90,261.49

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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.