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Finding the Fourth Proportional to 79,905.80, 119,671.82 and 63,153.40

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Solution

The fourth proportional to 79,905.80, 119,671.82 and 63,153.40 is: 94,582.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,905.80 : 119,671.82 = 63,153.40 : x
  2. Step 2: Convert to fraction form
    79,905.80/119,671.82 = 63,153.40/x
  3. Step 3: Cross multiply
    79,905.80x = 119,671.82 × 63,153.40
  4. Step 4: Simplify right side
    79,905.80x = 7,557,682,317.19
  5. Step 5: Solve for x
    x = 7,557,682,317.19/79,905.80
  6. Step 6: Final answer
    x = 94,582.40

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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.