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Finding the Fourth Proportional to 70,020.52, 96,627.89 and 39,805.85

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Solution

The fourth proportional to 70,020.52, 96,627.89 and 39,805.85 is: 54,931.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,020.52 : 96,627.89 = 39,805.85 : x
  2. Step 2: Convert to fraction form
    70,020.52/96,627.89 = 39,805.85/x
  3. Step 3: Cross multiply
    70,020.52x = 96,627.89 × 39,805.85
  4. Step 4: Simplify right side
    70,020.52x = 3,846,355,636.24
  5. Step 5: Solve for x
    x = 3,846,355,636.24/70,020.52
  6. Step 6: Final answer
    x = 54,931.84

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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.