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Finding the Fourth Proportional to 66,276.15, 91,461 and 36,061.41

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Solution

The fourth proportional to 66,276.15, 91,461 and 36,061.41 is: 49,764.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,276.15 : 91,461 = 36,061.41 : x
  2. Step 2: Convert to fraction form
    66,276.15/91,461 = 36,061.41/x
  3. Step 3: Cross multiply
    66,276.15x = 91,461 × 36,061.41
  4. Step 4: Simplify right side
    66,276.15x = 3,298,212,620.01
  5. Step 5: Solve for x
    x = 3,298,212,620.01/66,276.15
  6. Step 6: Final answer
    x = 49,764.70

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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.