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Finding the Fourth Proportional to 103,611.92, 155,402.42 and 28,724.24

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Solution

The fourth proportional to 103,611.92, 155,402.42 and 28,724.24 is: 43,082.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,611.92 : 155,402.42 = 28,724.24 : x
  2. Step 2: Convert to fraction form
    103,611.92/155,402.42 = 28,724.24/x
  3. Step 3: Cross multiply
    103,611.92x = 155,402.42 × 28,724.24
  4. Step 4: Simplify right side
    103,611.92x = 4,463,816,653.55
  5. Step 5: Solve for x
    x = 4,463,816,653.55/103,611.92
  6. Step 6: Final answer
    x = 43,082.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.