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Finding the Fourth Proportional to 90,568.78, 135,809.85 and 33,603.58

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Solution

The fourth proportional to 90,568.78, 135,809.85 and 33,603.58 is: 50,389.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,568.78 : 135,809.85 = 33,603.58 : x
  2. Step 2: Convert to fraction form
    90,568.78/135,809.85 = 33,603.58/x
  3. Step 3: Cross multiply
    90,568.78x = 135,809.85 × 33,603.58
  4. Step 4: Simplify right side
    90,568.78x = 4,563,697,159.26
  5. Step 5: Solve for x
    x = 4,563,697,159.26/90,568.78
  6. Step 6: Final answer
    x = 50,389.30

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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.