Home / 84,128.28-126,270.18-42,604.44

Finding the Fourth Proportional to 84,128.28, 126,270.18 and 42,604.44

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Solution

The fourth proportional to 84,128.28, 126,270.18 and 42,604.44 is: 63,946.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,128.28 : 126,270.18 = 42,604.44 : x
  2. Step 2: Convert to fraction form
    84,128.28/126,270.18 = 42,604.44/x
  3. Step 3: Cross multiply
    84,128.28x = 126,270.18 × 42,604.44
  4. Step 4: Simplify right side
    84,128.28x = 5,379,670,307.60
  5. Step 5: Solve for x
    x = 5,379,670,307.60/84,128.28
  6. Step 6: Final answer
    x = 63,946.04

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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.