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Finding the Fourth Proportional to 72,883.67, 109,334.26 and 68,897.86

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Solution

The fourth proportional to 72,883.67, 109,334.26 and 68,897.86 is: 103,355.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,883.67 : 109,334.26 = 68,897.86 : x
  2. Step 2: Convert to fraction form
    72,883.67/109,334.26 = 68,897.86/x
  3. Step 3: Cross multiply
    72,883.67x = 109,334.26 × 68,897.86
  4. Step 4: Simplify right side
    72,883.67x = 7,532,896,538.68
  5. Step 5: Solve for x
    x = 7,532,896,538.68/72,883.67
  6. Step 6: Final answer
    x = 103,355.07

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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.