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Finding the Fourth Proportional to 89,897.87, 134,807.61 and 47,767.79

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Solution

The fourth proportional to 89,897.87, 134,807.61 and 47,767.79 is: 71,630.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,897.87 : 134,807.61 = 47,767.79 : x
  2. Step 2: Convert to fraction form
    89,897.87/134,807.61 = 47,767.79/x
  3. Step 3: Cross multiply
    89,897.87x = 134,807.61 × 47,767.79
  4. Step 4: Simplify right side
    89,897.87x = 6,439,461,604.88
  5. Step 5: Solve for x
    x = 6,439,461,604.88/89,897.87
  6. Step 6: Final answer
    x = 71,630.86

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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.