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Finding the Fourth Proportional to 66,315.92, 91,506.60 and 38,022.80

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Solution

The fourth proportional to 66,315.92, 91,506.60 and 38,022.80 is: 52,466.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,315.92 : 91,506.60 = 38,022.80 : x
  2. Step 2: Convert to fraction form
    66,315.92/91,506.60 = 38,022.80/x
  3. Step 3: Cross multiply
    66,315.92x = 91,506.60 × 38,022.80
  4. Step 4: Simplify right side
    66,315.92x = 3,479,337,150.48
  5. Step 5: Solve for x
    x = 3,479,337,150.48/66,315.92
  6. Step 6: Final answer
    x = 52,466.09

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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.