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Finding the Fourth Proportional to 65,875.91, 90,909.07 and 35,661.26

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Solution

The fourth proportional to 65,875.91, 90,909.07 and 35,661.26 is: 49,212.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,875.91 : 90,909.07 = 35,661.26 : x
  2. Step 2: Convert to fraction form
    65,875.91/90,909.07 = 35,661.26/x
  3. Step 3: Cross multiply
    65,875.91x = 90,909.07 × 35,661.26
  4. Step 4: Simplify right side
    65,875.91x = 3,241,932,119.75
  5. Step 5: Solve for x
    x = 3,241,932,119.75/65,875.91
  6. Step 6: Final answer
    x = 49,212.71

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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.