Home / 90,858.11-136,292.64-28,528.61

Finding the Fourth Proportional to 90,858.11, 136,292.64 and 28,528.61

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Solution

The fourth proportional to 90,858.11, 136,292.64 and 28,528.61 is: 42,794.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,858.11 : 136,292.64 = 28,528.61 : x
  2. Step 2: Convert to fraction form
    90,858.11/136,292.64 = 28,528.61/x
  3. Step 3: Cross multiply
    90,858.11x = 136,292.64 × 28,528.61
  4. Step 4: Simplify right side
    90,858.11x = 3,888,239,572.43
  5. Step 5: Solve for x
    x = 3,888,239,572.43/90,858.11
  6. Step 6: Final answer
    x = 42,794.63

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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.