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Finding the Fourth Proportional to 70,182.62, 96,847.75 and 39,969.21

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Solution

The fourth proportional to 70,182.62, 96,847.75 and 39,969.21 is: 55,155.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,182.62 : 96,847.75 = 39,969.21 : x
  2. Step 2: Convert to fraction form
    70,182.62/96,847.75 = 39,969.21/x
  3. Step 3: Cross multiply
    70,182.62x = 96,847.75 × 39,969.21
  4. Step 4: Simplify right side
    70,182.62x = 3,870,928,057.78
  5. Step 5: Solve for x
    x = 3,870,928,057.78/70,182.62
  6. Step 6: Final answer
    x = 55,155.08

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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.