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Finding the Fourth Proportional to 71,575.44, 98,780.01 and 39,746.40

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Solution

The fourth proportional to 71,575.44, 98,780.01 and 39,746.40 is: 54,853.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,575.44 : 98,780.01 = 39,746.40 : x
  2. Step 2: Convert to fraction form
    71,575.44/98,780.01 = 39,746.40/x
  3. Step 3: Cross multiply
    71,575.44x = 98,780.01 × 39,746.40
  4. Step 4: Simplify right side
    71,575.44x = 3,926,149,789.46
  5. Step 5: Solve for x
    x = 3,926,149,789.46/71,575.44
  6. Step 6: Final answer
    x = 54,853.31

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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.