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Finding the Fourth Proportional to 103,425.05, 155,155.80 and 36,903.80

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Solution

The fourth proportional to 103,425.05, 155,155.80 and 36,903.80 is: 55,362.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,425.05 : 155,155.80 = 36,903.80 : x
  2. Step 2: Convert to fraction form
    103,425.05/155,155.80 = 36,903.80/x
  3. Step 3: Cross multiply
    103,425.05x = 155,155.80 × 36,903.80
  4. Step 4: Simplify right side
    103,425.05x = 5,725,838,612.04
  5. Step 5: Solve for x
    x = 5,725,838,612.04/103,425.05
  6. Step 6: Final answer
    x = 55,362.20

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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.