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Finding the Fourth Proportional to 103,838.40, 155,763.12 and 33,712.56

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Solution

The fourth proportional to 103,838.40, 155,763.12 and 33,712.56 is: 50,570.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,838.40 : 155,763.12 = 33,712.56 : x
  2. Step 2: Convert to fraction form
    103,838.40/155,763.12 = 33,712.56/x
  3. Step 3: Cross multiply
    103,838.40x = 155,763.12 × 33,712.56
  4. Step 4: Simplify right side
    103,838.40x = 5,251,173,528.79
  5. Step 5: Solve for x
    x = 5,251,173,528.79/103,838.40
  6. Step 6: Final answer
    x = 50,570.63

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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.