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Finding the Fourth Proportional to 66,143.85, 91,273.80 and 37,466.40

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Solution

The fourth proportional to 66,143.85, 91,273.80 and 37,466.40 is: 51,700.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,143.85 : 91,273.80 = 37,466.40 : x
  2. Step 2: Convert to fraction form
    66,143.85/91,273.80 = 37,466.40/x
  3. Step 3: Cross multiply
    66,143.85x = 91,273.80 × 37,466.40
  4. Step 4: Simplify right side
    66,143.85x = 3,419,700,700.32
  5. Step 5: Solve for x
    x = 3,419,700,700.32/66,143.85
  6. Step 6: Final answer
    x = 51,700.96

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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.