Home / 71,321.32-98,426.78-39,490.75

Finding the Fourth Proportional to 71,321.32, 98,426.78 and 39,490.75

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Solution

The fourth proportional to 71,321.32, 98,426.78 and 39,490.75 is: 54,499.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,321.32 : 98,426.78 = 39,490.75 : x
  2. Step 2: Convert to fraction form
    71,321.32/98,426.78 = 39,490.75/x
  3. Step 3: Cross multiply
    71,321.32x = 98,426.78 × 39,490.75
  4. Step 4: Simplify right side
    71,321.32x = 3,886,947,362.29
  5. Step 5: Solve for x
    x = 3,886,947,362.29/71,321.32
  6. Step 6: Final answer
    x = 54,499.09

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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.