Home / 90,319.62-135,453.92-56,989.74

Finding the Fourth Proportional to 90,319.62, 135,453.92 and 56,989.74

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Solution

The fourth proportional to 90,319.62, 135,453.92 and 56,989.74 is: 85,468.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,319.62 : 135,453.92 = 56,989.74 : x
  2. Step 2: Convert to fraction form
    90,319.62/135,453.92 = 56,989.74/x
  3. Step 3: Cross multiply
    90,319.62x = 135,453.92 × 56,989.74
  4. Step 4: Simplify right side
    90,319.62x = 7,719,483,682.78
  5. Step 5: Solve for x
    x = 7,719,483,682.78/90,319.62
  6. Step 6: Final answer
    x = 85,468.51

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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.