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Finding the Fourth Proportional to 57,864.07, 86,795.48 and 43,909.79

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Solution

The fourth proportional to 57,864.07, 86,795.48 and 43,909.79 is: 65,864.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,864.07 : 86,795.48 = 43,909.79 : x
  2. Step 2: Convert to fraction form
    57,864.07/86,795.48 = 43,909.79/x
  3. Step 3: Cross multiply
    57,864.07x = 86,795.48 × 43,909.79
  4. Step 4: Simplify right side
    57,864.07x = 3,811,171,626.51
  5. Step 5: Solve for x
    x = 3,811,171,626.51/57,864.07
  6. Step 6: Final answer
    x = 65,864.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.