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Finding the Fourth Proportional to 65,757.58, 90,750.99 and 40,263.82

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Solution

The fourth proportional to 65,757.58, 90,750.99 and 40,263.82 is: 55,567.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,757.58 : 90,750.99 = 40,263.82 : x
  2. Step 2: Convert to fraction form
    65,757.58/90,750.99 = 40,263.82/x
  3. Step 3: Cross multiply
    65,757.58x = 90,750.99 × 40,263.82
  4. Step 4: Simplify right side
    65,757.58x = 3,653,981,526.18
  5. Step 5: Solve for x
    x = 3,653,981,526.18/65,757.58
  6. Step 6: Final answer
    x = 55,567.46

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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.