Home / 90,922-136,387.86-28,597.36

Finding the Fourth Proportional to 90,922, 136,387.86 and 28,597.36

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Solution

The fourth proportional to 90,922, 136,387.86 and 28,597.36 is: 42,897.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,922 : 136,387.86 = 28,597.36 : x
  2. Step 2: Convert to fraction form
    90,922/136,387.86 = 28,597.36/x
  3. Step 3: Cross multiply
    90,922x = 136,387.86 × 28,597.36
  4. Step 4: Simplify right side
    90,922x = 3,900,332,732.05
  5. Step 5: Solve for x
    x = 3,900,332,732.05/90,922
  6. Step 6: Final answer
    x = 42,897.57

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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.