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Finding the Fourth Proportional to 91,422.97, 126,190.52 and 53,191.51

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Solution

The fourth proportional to 91,422.97, 126,190.52 and 53,191.51 is: 73,419.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,422.97 : 126,190.52 = 53,191.51 : x
  2. Step 2: Convert to fraction form
    91,422.97/126,190.52 = 53,191.51/x
  3. Step 3: Cross multiply
    91,422.97x = 126,190.52 × 53,191.51
  4. Step 4: Simplify right side
    91,422.97x = 6,712,264,306.49
  5. Step 5: Solve for x
    x = 6,712,264,306.49/91,422.97
  6. Step 6: Final answer
    x = 73,419.89

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1.5x scale

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.