Home / 90,788.34-136,204.39-28,458.84

Finding the Fourth Proportional to 90,788.34, 136,204.39 and 28,458.84

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Solution

The fourth proportional to 90,788.34, 136,204.39 and 28,458.84 is: 42,695.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,788.34 : 136,204.39 = 28,458.84 : x
  2. Step 2: Convert to fraction form
    90,788.34/136,204.39 = 28,458.84/x
  3. Step 3: Cross multiply
    90,788.34x = 136,204.39 × 28,458.84
  4. Step 4: Simplify right side
    90,788.34x = 3,876,219,328.57
  5. Step 5: Solve for x
    x = 3,876,219,328.57/90,788.34
  6. Step 6: Final answer
    x = 42,695.12

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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.