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Finding the Fourth Proportional to 66,059.34, 91,155.87 and 39,197.22

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Solution

The fourth proportional to 66,059.34, 91,155.87 and 39,197.22 is: 54,088.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,059.34 : 91,155.87 = 39,197.22 : x
  2. Step 2: Convert to fraction form
    66,059.34/91,155.87 = 39,197.22/x
  3. Step 3: Cross multiply
    66,059.34x = 91,155.87 × 39,197.22
  4. Step 4: Simplify right side
    66,059.34x = 3,573,056,690.68
  5. Step 5: Solve for x
    x = 3,573,056,690.68/66,059.34
  6. Step 6: Final answer
    x = 54,088.59

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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.