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Finding the Fourth Proportional to 235,671.45, 353,562.54 and 77,899.90

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Solution

The fourth proportional to 235,671.45, 353,562.54 and 77,899.90 is: 116,868.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,671.45 : 353,562.54 = 77,899.90 : x
  2. Step 2: Convert to fraction form
    235,671.45/353,562.54 = 77,899.90/x
  3. Step 3: Cross multiply
    235,671.45x = 353,562.54 × 77,899.90
  4. Step 4: Simplify right side
    235,671.45x = 27,542,485,996.64
  5. Step 5: Solve for x
    x = 27,542,485,996.64/235,671.45
  6. Step 6: Final answer
    x = 116,868.15

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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.