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Finding the Fourth Proportional to 103,387.52, 154,863.29 and 47,274.80

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Solution

The fourth proportional to 103,387.52, 154,863.29 and 47,274.80 is: 70,812.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,387.52 : 154,863.29 = 47,274.80 : x
  2. Step 2: Convert to fraction form
    103,387.52/154,863.29 = 47,274.80/x
  3. Step 3: Cross multiply
    103,387.52x = 154,863.29 × 47,274.80
  4. Step 4: Simplify right side
    103,387.52x = 7,321,130,405.96
  5. Step 5: Solve for x
    x = 7,321,130,405.96/103,387.52
  6. Step 6: Final answer
    x = 70,812.51

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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.