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Finding the Fourth Proportional to 70,309.62, 97,027.20 and 39,680.69

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Solution

The fourth proportional to 70,309.62, 97,027.20 and 39,680.69 is: 54,759.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,309.62 : 97,027.20 = 39,680.69 : x
  2. Step 2: Convert to fraction form
    70,309.62/97,027.20 = 39,680.69/x
  3. Step 3: Cross multiply
    70,309.62x = 97,027.20 × 39,680.69
  4. Step 4: Simplify right side
    70,309.62x = 3,850,105,759.63
  5. Step 5: Solve for x
    x = 3,850,105,759.63/70,309.62
  6. Step 6: Final answer
    x = 54,759.30

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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.