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Finding the Fourth Proportional to 103,424.55, 155,155.05 and 36,903.30

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Solution

The fourth proportional to 103,424.55, 155,155.05 and 36,903.30 is: 55,361.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,424.55 : 155,155.05 = 36,903.30 : x
  2. Step 2: Convert to fraction form
    103,424.55/155,155.05 = 36,903.30/x
  3. Step 3: Cross multiply
    103,424.55x = 155,155.05 × 36,903.30
  4. Step 4: Simplify right side
    103,424.55x = 5,725,733,356.67
  5. Step 5: Solve for x
    x = 5,725,733,356.67/103,424.55
  6. Step 6: Final answer
    x = 55,361.45

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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.