Home / 90,787.63-136,203.32-28,458.13

Finding the Fourth Proportional to 90,787.63, 136,203.32 and 28,458.13

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Solution

The fourth proportional to 90,787.63, 136,203.32 and 28,458.13 is: 42,694.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,787.63 : 136,203.32 = 28,458.13 : x
  2. Step 2: Convert to fraction form
    90,787.63/136,203.32 = 28,458.13/x
  3. Step 3: Cross multiply
    90,787.63x = 136,203.32 × 28,458.13
  4. Step 4: Simplify right side
    90,787.63x = 3,876,091,786.99
  5. Step 5: Solve for x
    x = 3,876,091,786.99/90,787.63
  6. Step 6: Final answer
    x = 42,694.05

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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.