Home / 79,228.54-109,338.40-45,242.56

Finding the Fourth Proportional to 79,228.54, 109,338.40 and 45,242.56

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Solution

The fourth proportional to 79,228.54, 109,338.40 and 45,242.56 is: 62,436.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,228.54 : 109,338.40 = 45,242.56 : x
  2. Step 2: Convert to fraction form
    79,228.54/109,338.40 = 45,242.56/x
  3. Step 3: Cross multiply
    79,228.54x = 109,338.40 × 45,242.56
  4. Step 4: Simplify right side
    79,228.54x = 4,946,749,122.30
  5. Step 5: Solve for x
    x = 4,946,749,122.30/79,228.54
  6. Step 6: Final answer
    x = 62,436.45

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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.