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Finding the Fourth Proportional to 85,323.60, 127,969.20 and 26,161.20

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Solution

The fourth proportional to 85,323.60, 127,969.20 and 26,161.20 is: 39,236.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,323.60 : 127,969.20 = 26,161.20 : x
  2. Step 2: Convert to fraction form
    85,323.60/127,969.20 = 26,161.20/x
  3. Step 3: Cross multiply
    85,323.60x = 127,969.20 × 26,161.20
  4. Step 4: Simplify right side
    85,323.60x = 3,347,827,835.04
  5. Step 5: Solve for x
    x = 3,347,827,835.04/85,323.60
  6. Step 6: Final answer
    x = 39,236.83

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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.