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Finding the Fourth Proportional to 79,807.78, 119,007.62 and 75,883.48

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Solution

The fourth proportional to 79,807.78, 119,007.62 and 75,883.48 is: 113,155.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,807.78 : 119,007.62 = 75,883.48 : x
  2. Step 2: Convert to fraction form
    79,807.78/119,007.62 = 75,883.48/x
  3. Step 3: Cross multiply
    79,807.78x = 119,007.62 × 75,883.48
  4. Step 4: Simplify right side
    79,807.78x = 9,030,712,352.12
  5. Step 5: Solve for x
    x = 9,030,712,352.12/79,807.78
  6. Step 6: Final answer
    x = 113,155.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.