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Finding the Fourth Proportional to 101,431.80, 152,147.70 and 26,551.80

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Solution

The fourth proportional to 101,431.80, 152,147.70 and 26,551.80 is: 39,827.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,431.80 : 152,147.70 = 26,551.80 : x
  2. Step 2: Convert to fraction form
    101,431.80/152,147.70 = 26,551.80/x
  3. Step 3: Cross multiply
    101,431.80x = 152,147.70 × 26,551.80
  4. Step 4: Simplify right side
    101,431.80x = 4,039,795,300.86
  5. Step 5: Solve for x
    x = 4,039,795,300.86/101,431.80
  6. Step 6: Final answer
    x = 39,827.70

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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.