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Finding the Fourth Proportional to 85,425.40, 127,835.70 and 74,452.60

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Solution

The fourth proportional to 85,425.40, 127,835.70 and 74,452.60 is: 111,415.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,425.40 : 127,835.70 = 74,452.60 : x
  2. Step 2: Convert to fraction form
    85,425.40/127,835.70 = 74,452.60/x
  3. Step 3: Cross multiply
    85,425.40x = 127,835.70 × 74,452.60
  4. Step 4: Simplify right side
    85,425.40x = 9,517,700,237.82
  5. Step 5: Solve for x
    x = 9,517,700,237.82/85,425.40
  6. Step 6: Final answer
    x = 111,415.34

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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.