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Finding the Fourth Proportional to 85,165.63, 127,674.20 and 35,214.55

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Solution

The fourth proportional to 85,165.63, 127,674.20 and 35,214.55 is: 52,791.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,165.63 : 127,674.20 = 35,214.55 : x
  2. Step 2: Convert to fraction form
    85,165.63/127,674.20 = 35,214.55/x
  3. Step 3: Cross multiply
    85,165.63x = 127,674.20 × 35,214.55
  4. Step 4: Simplify right side
    85,165.63x = 4,495,989,323.54
  5. Step 5: Solve for x
    x = 4,495,989,323.54/85,165.63
  6. Step 6: Final answer
    x = 52,791.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.