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Finding the Fourth Proportional to 71,605.53, 98,889.03 and 53,672.13

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Solution

The fourth proportional to 71,605.53, 98,889.03 and 53,672.13 is: 74,122.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,605.53 : 98,889.03 = 53,672.13 : x
  2. Step 2: Convert to fraction form
    71,605.53/98,889.03 = 53,672.13/x
  3. Step 3: Cross multiply
    71,605.53x = 98,889.03 × 53,672.13
  4. Step 4: Simplify right side
    71,605.53x = 5,307,584,873.73
  5. Step 5: Solve for x
    x = 5,307,584,873.73/71,605.53
  6. Step 6: Final answer
    x = 74,122.56

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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.