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Finding the Fourth Proportional to 103,337.63, 154,986.05 and 28,438.55

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Solution

The fourth proportional to 103,337.63, 154,986.05 and 28,438.55 is: 42,652.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,337.63 : 154,986.05 = 28,438.55 : x
  2. Step 2: Convert to fraction form
    103,337.63/154,986.05 = 28,438.55/x
  3. Step 3: Cross multiply
    103,337.63x = 154,986.05 × 28,438.55
  4. Step 4: Simplify right side
    103,337.63x = 4,407,577,828.39
  5. Step 5: Solve for x
    x = 4,407,577,828.39/103,337.63
  6. Step 6: Final answer
    x = 42,652.21

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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.