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Finding the Fourth Proportional to 31,754.40, 47,619.40 and 15,101.60

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Solution

The fourth proportional to 31,754.40, 47,619.40 and 15,101.60 is: 22,646.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,754.40 : 47,619.40 = 15,101.60 : x
  2. Step 2: Convert to fraction form
    31,754.40/47,619.40 = 15,101.60/x
  3. Step 3: Cross multiply
    31,754.40x = 47,619.40 × 15,101.60
  4. Step 4: Simplify right side
    31,754.40x = 719,129,131.04
  5. Step 5: Solve for x
    x = 719,129,131.04/31,754.40
  6. Step 6: Final answer
    x = 22,646.60

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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.