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Finding the Fourth Proportional to 91,466.57, 126,052.88 and 65,928.78

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Solution

The fourth proportional to 91,466.57, 126,052.88 and 65,928.78 is: 90,858.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,466.57 : 126,052.88 = 65,928.78 : x
  2. Step 2: Convert to fraction form
    91,466.57/126,052.88 = 65,928.78/x
  3. Step 3: Cross multiply
    91,466.57x = 126,052.88 × 65,928.78
  4. Step 4: Simplify right side
    91,466.57x = 8,310,512,264.24
  5. Step 5: Solve for x
    x = 8,310,512,264.24/91,466.57
  6. Step 6: Final answer
    x = 90,858.47

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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.