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Finding the Fourth Proportional to 89,910.70, 134,866.05 and 30,748.30

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Solution

The fourth proportional to 89,910.70, 134,866.05 and 30,748.30 is: 46,122.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,910.70 : 134,866.05 = 30,748.30 : x
  2. Step 2: Convert to fraction form
    89,910.70/134,866.05 = 30,748.30/x
  3. Step 3: Cross multiply
    89,910.70x = 134,866.05 × 30,748.30
  4. Step 4: Simplify right side
    89,910.70x = 4,146,901,765.22
  5. Step 5: Solve for x
    x = 4,146,901,765.22/89,910.70
  6. Step 6: Final answer
    x = 46,122.45

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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.