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Finding the Fourth Proportional to 70,797.57, 97,699.84 and 38,965.78

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Solution

The fourth proportional to 70,797.57, 97,699.84 and 38,965.78 is: 53,772.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,797.57 : 97,699.84 = 38,965.78 : x
  2. Step 2: Convert to fraction form
    70,797.57/97,699.84 = 38,965.78/x
  3. Step 3: Cross multiply
    70,797.57x = 97,699.84 × 38,965.78
  4. Step 4: Simplify right side
    70,797.57x = 3,806,950,471.48
  5. Step 5: Solve for x
    x = 3,806,950,471.48/70,797.57
  6. Step 6: Final answer
    x = 53,772.33

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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.