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Finding the Fourth Proportional to 64,671.50, 89,251.80 and 36,379.28

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Solution

The fourth proportional to 64,671.50, 89,251.80 and 36,379.28 is: 50,206.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,671.50 : 89,251.80 = 36,379.28 : x
  2. Step 2: Convert to fraction form
    64,671.50/89,251.80 = 36,379.28/x
  3. Step 3: Cross multiply
    64,671.50x = 89,251.80 × 36,379.28
  4. Step 4: Simplify right side
    64,671.50x = 3,246,916,222.70
  5. Step 5: Solve for x
    x = 3,246,916,222.70/64,671.50
  6. Step 6: Final answer
    x = 50,206.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.