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Finding the Fourth Proportional to 101,731.60, 152,611.80 and 31,603.60

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Solution

The fourth proportional to 101,731.60, 152,611.80 and 31,603.60 is: 47,409.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,731.60 : 152,611.80 = 31,603.60 : x
  2. Step 2: Convert to fraction form
    101,731.60/152,611.80 = 31,603.60/x
  3. Step 3: Cross multiply
    101,731.60x = 152,611.80 × 31,603.60
  4. Step 4: Simplify right side
    101,731.60x = 4,823,082,282.48
  5. Step 5: Solve for x
    x = 4,823,082,282.48/101,731.60
  6. Step 6: Final answer
    x = 47,409.87

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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.