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Finding the Fourth Proportional to 71,316.67, 98,422.56 and 39,488.53

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Solution

The fourth proportional to 71,316.67, 98,422.56 and 39,488.53 is: 54,497.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,316.67 : 98,422.56 = 39,488.53 : x
  2. Step 2: Convert to fraction form
    71,316.67/98,422.56 = 39,488.53/x
  3. Step 3: Cross multiply
    71,316.67x = 98,422.56 × 39,488.53
  4. Step 4: Simplify right side
    71,316.67x = 3,886,562,213.24
  5. Step 5: Solve for x
    x = 3,886,562,213.24/71,316.67
  6. Step 6: Final answer
    x = 54,497.25

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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.