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Finding the Fourth Proportional to 91,101.69, 125,720.44 and 52,868.75

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Solution

The fourth proportional to 91,101.69, 125,720.44 and 52,868.75 is: 72,958.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,101.69 : 125,720.44 = 52,868.75 : x
  2. Step 2: Convert to fraction form
    91,101.69/125,720.44 = 52,868.75/x
  3. Step 3: Cross multiply
    91,101.69x = 125,720.44 × 52,868.75
  4. Step 4: Simplify right side
    91,101.69x = 6,646,681,751.48
  5. Step 5: Solve for x
    x = 6,646,681,751.48/91,101.69
  6. Step 6: Final answer
    x = 72,958.93

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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.