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Finding the Fourth Proportional to 84,775.70, 127,163.55 and 25,605.20

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Solution

The fourth proportional to 84,775.70, 127,163.55 and 25,605.20 is: 38,407.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,775.70 : 127,163.55 = 25,605.20 : x
  2. Step 2: Convert to fraction form
    84,775.70/127,163.55 = 25,605.20/x
  3. Step 3: Cross multiply
    84,775.70x = 127,163.55 × 25,605.20
  4. Step 4: Simplify right side
    84,775.70x = 3,256,048,130.46
  5. Step 5: Solve for x
    x = 3,256,048,130.46/84,775.70
  6. Step 6: Final answer
    x = 38,407.80

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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.