Home / 84,678.32-126,996.94-28,503.82

Finding the Fourth Proportional to 84,678.32, 126,996.94 and 28,503.82

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Solution

The fourth proportional to 84,678.32, 126,996.94 and 28,503.82 is: 42,748.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,678.32 : 126,996.94 = 28,503.82 : x
  2. Step 2: Convert to fraction form
    84,678.32/126,996.94 = 28,503.82/x
  3. Step 3: Cross multiply
    84,678.32x = 126,996.94 × 28,503.82
  4. Step 4: Simplify right side
    84,678.32x = 3,619,897,918.31
  5. Step 5: Solve for x
    x = 3,619,897,918.31/84,678.32
  6. Step 6: Final answer
    x = 42,748.82

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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.