Home / 79,220.10-109,313.33-47,377.38

Finding the Fourth Proportional to 79,220.10, 109,313.33 and 47,377.38

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Solution

The fourth proportional to 79,220.10, 109,313.33 and 47,377.38 is: 65,374.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,220.10 : 109,313.33 = 47,377.38 : x
  2. Step 2: Convert to fraction form
    79,220.10/109,313.33 = 47,377.38/x
  3. Step 3: Cross multiply
    79,220.10x = 109,313.33 × 47,377.38
  4. Step 4: Simplify right side
    79,220.10x = 5,178,978,937.59
  5. Step 5: Solve for x
    x = 5,178,978,937.59/79,220.10
  6. Step 6: Final answer
    x = 65,374.56

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1.5x scale

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.