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Finding the Fourth Proportional to 65,731.80, 98,484.30 and 30,599.40

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Solution

The fourth proportional to 65,731.80, 98,484.30 and 30,599.40 is: 45,846.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,731.80 : 98,484.30 = 30,599.40 : x
  2. Step 2: Convert to fraction form
    65,731.80/98,484.30 = 30,599.40/x
  3. Step 3: Cross multiply
    65,731.80x = 98,484.30 × 30,599.40
  4. Step 4: Simplify right side
    65,731.80x = 3,013,560,489.42
  5. Step 5: Solve for x
    x = 3,013,560,489.42/65,731.80
  6. Step 6: Final answer
    x = 45,846.31

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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.