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Finding the Fourth Proportional to 69,758.40, 104,491.20 and 54,897.12

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Solution

The fourth proportional to 69,758.40, 104,491.20 and 54,897.12 is: 82,230.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,758.40 : 104,491.20 = 54,897.12 : x
  2. Step 2: Convert to fraction form
    69,758.40/104,491.20 = 54,897.12/x
  3. Step 3: Cross multiply
    69,758.40x = 104,491.20 × 54,897.12
  4. Step 4: Simplify right side
    69,758.40x = 5,736,265,945.34
  5. Step 5: Solve for x
    x = 5,736,265,945.34/69,758.40
  6. Step 6: Final answer
    x = 82,230.47

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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.