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Finding the Fourth Proportional to 89,896.40, 134,812.20 and 45,508.40

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Solution

The fourth proportional to 89,896.40, 134,812.20 and 45,508.40 is: 68,246.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,896.40 : 134,812.20 = 45,508.40 : x
  2. Step 2: Convert to fraction form
    89,896.40/134,812.20 = 45,508.40/x
  3. Step 3: Cross multiply
    89,896.40x = 134,812.20 × 45,508.40
  4. Step 4: Simplify right side
    89,896.40x = 6,135,087,522.48
  5. Step 5: Solve for x
    x = 6,135,087,522.48/89,896.40
  6. Step 6: Final answer
    x = 68,246.20

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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.