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Finding the Fourth Proportional to 68,953.70, 103,416.03 and 31,503.14

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Solution

The fourth proportional to 68,953.70, 103,416.03 and 31,503.14 is: 47,248.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,953.70 : 103,416.03 = 31,503.14 : x
  2. Step 2: Convert to fraction form
    68,953.70/103,416.03 = 31,503.14/x
  3. Step 3: Cross multiply
    68,953.70x = 103,416.03 × 31,503.14
  4. Step 4: Simplify right side
    68,953.70x = 3,257,929,671.33
  5. Step 5: Solve for x
    x = 3,257,929,671.33/68,953.70
  6. Step 6: Final answer
    x = 47,248.08

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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.