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Finding the Fourth Proportional to 85,217.84, 117,813.20 and 63,960.20

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Solution

The fourth proportional to 85,217.84, 117,813.20 and 63,960.20 is: 88,424.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,217.84 : 117,813.20 = 63,960.20 : x
  2. Step 2: Convert to fraction form
    85,217.84/117,813.20 = 63,960.20/x
  3. Step 3: Cross multiply
    85,217.84x = 117,813.20 × 63,960.20
  4. Step 4: Simplify right side
    85,217.84x = 7,535,355,834.64
  5. Step 5: Solve for x
    x = 7,535,355,834.64/85,217.84
  6. Step 6: Final answer
    x = 88,424.63

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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.