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Finding the Fourth Proportional to 70,021.50, 96,710.28 and 50,986.38

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Solution

The fourth proportional to 70,021.50, 96,710.28 and 50,986.38 is: 70,419.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,021.50 : 96,710.28 = 50,986.38 : x
  2. Step 2: Convert to fraction form
    70,021.50/96,710.28 = 50,986.38/x
  3. Step 3: Cross multiply
    70,021.50x = 96,710.28 × 50,986.38
  4. Step 4: Simplify right side
    70,021.50x = 4,930,907,085.99
  5. Step 5: Solve for x
    x = 4,930,907,085.99/70,021.50
  6. Step 6: Final answer
    x = 70,419.90

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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.