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Finding the Fourth Proportional to 89,997.60, 135,082.80 and 45,674.40

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Solution

The fourth proportional to 89,997.60, 135,082.80 and 45,674.40 is: 68,555.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,997.60 : 135,082.80 = 45,674.40 : x
  2. Step 2: Convert to fraction form
    89,997.60/135,082.80 = 45,674.40/x
  3. Step 3: Cross multiply
    89,997.60x = 135,082.80 × 45,674.40
  4. Step 4: Simplify right side
    89,997.60x = 6,169,825,840.32
  5. Step 5: Solve for x
    x = 6,169,825,840.32/89,997.60
  6. Step 6: Final answer
    x = 68,555.45

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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.