Home / 71,321.20-98,439.78-47,448.88

Finding the Fourth Proportional to 71,321.20, 98,439.78 and 47,448.88

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Solution

The fourth proportional to 71,321.20, 98,439.78 and 47,448.88 is: 65,490.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,321.20 : 98,439.78 = 47,448.88 : x
  2. Step 2: Convert to fraction form
    71,321.20/98,439.78 = 47,448.88/x
  3. Step 3: Cross multiply
    71,321.20x = 98,439.78 × 47,448.88
  4. Step 4: Simplify right side
    71,321.20x = 4,670,857,308.45
  5. Step 5: Solve for x
    x = 4,670,857,308.45/71,321.20
  6. Step 6: Final answer
    x = 65,490.45

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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.