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Finding the Fourth Proportional to 90,401.60, 135,420.80 and 50,899.52

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Solution

The fourth proportional to 90,401.60, 135,420.80 and 50,899.52 is: 76,247.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,401.60 : 135,420.80 = 50,899.52 : x
  2. Step 2: Convert to fraction form
    90,401.60/135,420.80 = 50,899.52/x
  3. Step 3: Cross multiply
    90,401.60x = 135,420.80 × 50,899.52
  4. Step 4: Simplify right side
    90,401.60x = 6,892,853,718.02
  5. Step 5: Solve for x
    x = 6,892,853,718.02/90,401.60
  6. Step 6: Final answer
    x = 76,247.03

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1.5x scale

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.