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Finding the Fourth Proportional to 69,103.88, 95,362.20 and 38,889.20

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Solution

The fourth proportional to 69,103.88, 95,362.20 and 38,889.20 is: 53,666.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,103.88 : 95,362.20 = 38,889.20 : x
  2. Step 2: Convert to fraction form
    69,103.88/95,362.20 = 38,889.20/x
  3. Step 3: Cross multiply
    69,103.88x = 95,362.20 × 38,889.20
  4. Step 4: Simplify right side
    69,103.88x = 3,708,559,668.24
  5. Step 5: Solve for x
    x = 3,708,559,668.24/69,103.88
  6. Step 6: Final answer
    x = 53,666.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.