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Finding the Fourth Proportional to 89,809.20, 134,859.60 and 50,443.20

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Solution

The fourth proportional to 89,809.20, 134,859.60 and 50,443.20 is: 75,746.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,809.20 : 134,859.60 = 50,443.20 : x
  2. Step 2: Convert to fraction form
    89,809.20/134,859.60 = 50,443.20/x
  3. Step 3: Cross multiply
    89,809.20x = 134,859.60 × 50,443.20
  4. Step 4: Simplify right side
    89,809.20x = 6,802,749,774.72
  5. Step 5: Solve for x
    x = 6,802,749,774.72/89,809.20
  6. Step 6: Final answer
    x = 75,746.69

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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.