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Finding the Fourth Proportional to 66,402.50, 91,632.77 and 36,187.17

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Solution

The fourth proportional to 66,402.50, 91,632.77 and 36,187.17 is: 49,936.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,402.50 : 91,632.77 = 36,187.17 : x
  2. Step 2: Convert to fraction form
    66,402.50/91,632.77 = 36,187.17/x
  3. Step 3: Cross multiply
    66,402.50x = 91,632.77 × 36,187.17
  4. Step 4: Simplify right side
    66,402.50x = 3,315,930,408.52
  5. Step 5: Solve for x
    x = 3,315,930,408.52/66,402.50
  6. Step 6: Final answer
    x = 49,936.83

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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.