Home / 72,531.88-108,583.98-70,743.40

Finding the Fourth Proportional to 72,531.88, 108,583.98 and 70,743.40

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Solution

The fourth proportional to 72,531.88, 108,583.98 and 70,743.40 is: 105,906.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,531.88 : 108,583.98 = 70,743.40 : x
  2. Step 2: Convert to fraction form
    72,531.88/108,583.98 = 70,743.40/x
  3. Step 3: Cross multiply
    72,531.88x = 108,583.98 × 70,743.40
  4. Step 4: Simplify right side
    72,531.88x = 7,681,599,930.73
  5. Step 5: Solve for x
    x = 7,681,599,930.73/72,531.88
  6. Step 6: Final answer
    x = 105,906.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.