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Finding the Fourth Proportional to 89,874.90, 134,895.24 and 45,532.80

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Solution

The fourth proportional to 89,874.90, 134,895.24 and 45,532.80 is: 68,341.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,874.90 : 134,895.24 = 45,532.80 : x
  2. Step 2: Convert to fraction form
    89,874.90/134,895.24 = 45,532.80/x
  3. Step 3: Cross multiply
    89,874.90x = 134,895.24 × 45,532.80
  4. Step 4: Simplify right side
    89,874.90x = 6,142,157,983.87
  5. Step 5: Solve for x
    x = 6,142,157,983.87/89,874.90
  6. Step 6: Final answer
    x = 68,341.19

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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.