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Finding the Fourth Proportional to 64,977.30, 89,667.81 and 36,683.55

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Solution

The fourth proportional to 64,977.30, 89,667.81 and 36,683.55 is: 50,622.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,977.30 : 89,667.81 = 36,683.55 : x
  2. Step 2: Convert to fraction form
    64,977.30/89,667.81 = 36,683.55/x
  3. Step 3: Cross multiply
    64,977.30x = 89,667.81 × 36,683.55
  4. Step 4: Simplify right side
    64,977.30x = 3,289,333,591.53
  5. Step 5: Solve for x
    x = 3,289,333,591.53/64,977.30
  6. Step 6: Final answer
    x = 50,622.81

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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.