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Finding the Fourth Proportional to 66,228.55, 91,388.86 and 37,542.56

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Solution

The fourth proportional to 66,228.55, 91,388.86 and 37,542.56 is: 51,805.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,228.55 : 91,388.86 = 37,542.56 : x
  2. Step 2: Convert to fraction form
    66,228.55/91,388.86 = 37,542.56/x
  3. Step 3: Cross multiply
    66,228.55x = 91,388.86 × 37,542.56
  4. Step 4: Simplify right side
    66,228.55x = 3,430,971,209.08
  5. Step 5: Solve for x
    x = 3,430,971,209.08/66,228.55
  6. Step 6: Final answer
    x = 51,805.02

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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.