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Finding the Fourth Proportional to 64,763.70, 89,372.16 and 36,468.78

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Solution

The fourth proportional to 64,763.70, 89,372.16 and 36,468.78 is: 50,325.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,763.70 : 89,372.16 = 36,468.78 : x
  2. Step 2: Convert to fraction form
    64,763.70/89,372.16 = 36,468.78/x
  3. Step 3: Cross multiply
    64,763.70x = 89,372.16 × 36,468.78
  4. Step 4: Simplify right side
    64,763.70x = 3,259,293,641.16
  5. Step 5: Solve for x
    x = 3,259,293,641.16/64,763.70
  6. Step 6: Final answer
    x = 50,325.93

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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.