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Finding the Fourth Proportional to 65,260.65, 90,051.66 and 39,757.77

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Solution

The fourth proportional to 65,260.65, 90,051.66 and 39,757.77 is: 54,860.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,260.65 : 90,051.66 = 39,757.77 : x
  2. Step 2: Convert to fraction form
    65,260.65/90,051.66 = 39,757.77/x
  3. Step 3: Cross multiply
    65,260.65x = 90,051.66 × 39,757.77
  4. Step 4: Simplify right side
    65,260.65x = 3,580,253,186.40
  5. Step 5: Solve for x
    x = 3,580,253,186.40/65,260.65
  6. Step 6: Final answer
    x = 54,860.83

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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.