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Finding the Fourth Proportional to 66,225.66, 91,392.09 and 37,930.74

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Solution

The fourth proportional to 66,225.66, 91,392.09 and 37,930.74 is: 52,344.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,225.66 : 91,392.09 = 37,930.74 : x
  2. Step 2: Convert to fraction form
    66,225.66/91,392.09 = 37,930.74/x
  3. Step 3: Cross multiply
    66,225.66x = 91,392.09 × 37,930.74
  4. Step 4: Simplify right side
    66,225.66x = 3,466,569,603.85
  5. Step 5: Solve for x
    x = 3,466,569,603.85/66,225.66
  6. Step 6: Final answer
    x = 52,344.81

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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.