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Finding the Fourth Proportional to 71,469.59, 98,624.70 and 39,637.80

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Solution

The fourth proportional to 71,469.59, 98,624.70 and 39,637.80 is: 54,698.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,469.59 : 98,624.70 = 39,637.80 : x
  2. Step 2: Convert to fraction form
    71,469.59/98,624.70 = 39,637.80/x
  3. Step 3: Cross multiply
    71,469.59x = 98,624.70 × 39,637.80
  4. Step 4: Simplify right side
    71,469.59x = 3,909,266,133.66
  5. Step 5: Solve for x
    x = 3,909,266,133.66/71,469.59
  6. Step 6: Final answer
    x = 54,698.32

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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.