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Finding the Fourth Proportional to 83,651.62, 115,439.43 and 45,928.30

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Solution

The fourth proportional to 83,651.62, 115,439.43 and 45,928.30 is: 63,381.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,651.62 : 115,439.43 = 45,928.30 : x
  2. Step 2: Convert to fraction form
    83,651.62/115,439.43 = 45,928.30/x
  3. Step 3: Cross multiply
    83,651.62x = 115,439.43 × 45,928.30
  4. Step 4: Simplify right side
    83,651.62x = 5,301,936,772.87
  5. Step 5: Solve for x
    x = 5,301,936,772.87/83,651.62
  6. Step 6: Final answer
    x = 63,381.16

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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.