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Finding the Fourth Proportional to 72,701.60, 109,052.04 and 19,393.46

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Solution

The fourth proportional to 72,701.60, 109,052.04 and 19,393.46 is: 29,090.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,701.60 : 109,052.04 = 19,393.46 : x
  2. Step 2: Convert to fraction form
    72,701.60/109,052.04 = 19,393.46/x
  3. Step 3: Cross multiply
    72,701.60x = 109,052.04 × 19,393.46
  4. Step 4: Simplify right side
    72,701.60x = 2,114,896,375.66
  5. Step 5: Solve for x
    x = 2,114,896,375.66/72,701.60
  6. Step 6: Final answer
    x = 29,090.09

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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.