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Finding the Fourth Proportional to 84,765.45, 127,160.94 and 25,605.90

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Solution

The fourth proportional to 84,765.45, 127,160.94 and 25,605.90 is: 38,412.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,765.45 : 127,160.94 = 25,605.90 : x
  2. Step 2: Convert to fraction form
    84,765.45/127,160.94 = 25,605.90/x
  3. Step 3: Cross multiply
    84,765.45x = 127,160.94 × 25,605.90
  4. Step 4: Simplify right side
    84,765.45x = 3,256,070,313.55
  5. Step 5: Solve for x
    x = 3,256,070,313.55/84,765.45
  6. Step 6: Final answer
    x = 38,412.71

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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.