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Finding the Fourth Proportional to 89,552.80, 134,620.80 and 63,438.40

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Solution

The fourth proportional to 89,552.80, 134,620.80 and 63,438.40 is: 95,364.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,552.80 : 134,620.80 = 63,438.40 : x
  2. Step 2: Convert to fraction form
    89,552.80/134,620.80 = 63,438.40/x
  3. Step 3: Cross multiply
    89,552.80x = 134,620.80 × 63,438.40
  4. Step 4: Simplify right side
    89,552.80x = 8,540,128,158.72
  5. Step 5: Solve for x
    x = 8,540,128,158.72/89,552.80
  6. Step 6: Final answer
    x = 95,364.17

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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.