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Finding the Fourth Proportional to 65,428.88, 98,123.88 and 23,879.12

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Solution

The fourth proportional to 65,428.88, 98,123.88 and 23,879.12 is: 35,811.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,428.88 : 98,123.88 = 23,879.12 : x
  2. Step 2: Convert to fraction form
    65,428.88/98,123.88 = 23,879.12/x
  3. Step 3: Cross multiply
    65,428.88x = 98,123.88 × 23,879.12
  4. Step 4: Simplify right side
    65,428.88x = 2,343,111,905.39
  5. Step 5: Solve for x
    x = 2,343,111,905.39/65,428.88
  6. Step 6: Final answer
    x = 35,811.59

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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.