Home / 79,261.78-109,363.29-53,771.62

Finding the Fourth Proportional to 79,261.78, 109,363.29 and 53,771.62

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Solution

The fourth proportional to 79,261.78, 109,363.29 and 53,771.62 is: 74,192.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,261.78 : 109,363.29 = 53,771.62 : x
  2. Step 2: Convert to fraction form
    79,261.78/109,363.29 = 53,771.62/x
  3. Step 3: Cross multiply
    79,261.78x = 109,363.29 × 53,771.62
  4. Step 4: Simplify right side
    79,261.78x = 5,880,641,271.83
  5. Step 5: Solve for x
    x = 5,880,641,271.83/79,261.78
  6. Step 6: Final answer
    x = 74,192.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.