Home / 90,919.91-136,316.47-40,291.37

Finding the Fourth Proportional to 90,919.91, 136,316.47 and 40,291.37

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Solution

The fourth proportional to 90,919.91, 136,316.47 and 40,291.37 is: 60,408.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,919.91 : 136,316.47 = 40,291.37 : x
  2. Step 2: Convert to fraction form
    90,919.91/136,316.47 = 40,291.37/x
  3. Step 3: Cross multiply
    90,919.91x = 136,316.47 × 40,291.37
  4. Step 4: Simplify right side
    90,919.91x = 5,492,376,446.82
  5. Step 5: Solve for x
    x = 5,492,376,446.82/90,919.91
  6. Step 6: Final answer
    x = 60,408.95

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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.