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Finding the Fourth Proportional to 89,841.72, 134,845.58 and 45,499.64

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Solution

The fourth proportional to 89,841.72, 134,845.58 and 45,499.64 is: 68,291.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,841.72 : 134,845.58 = 45,499.64 : x
  2. Step 2: Convert to fraction form
    89,841.72/134,845.58 = 45,499.64/x
  3. Step 3: Cross multiply
    89,841.72x = 134,845.58 × 45,499.64
  4. Step 4: Simplify right side
    89,841.72x = 6,135,425,345.59
  5. Step 5: Solve for x
    x = 6,135,425,345.59/89,841.72
  6. Step 6: Final answer
    x = 68,291.49

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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.