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Finding the Fourth Proportional to 73,274.40, 109,928.70 and 28,897.74

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Solution

The fourth proportional to 73,274.40, 109,928.70 and 28,897.74 is: 43,353.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,274.40 : 109,928.70 = 28,897.74 : x
  2. Step 2: Convert to fraction form
    73,274.40/109,928.70 = 28,897.74/x
  3. Step 3: Cross multiply
    73,274.40x = 109,928.70 × 28,897.74
  4. Step 4: Simplify right side
    73,274.40x = 3,176,690,991.14
  5. Step 5: Solve for x
    x = 3,176,690,991.14/73,274.40
  6. Step 6: Final answer
    x = 43,353.35

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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.