Home / 64,781.75-97,031.68-31,431.42

Finding the Fourth Proportional to 64,781.75, 97,031.68 and 31,431.42

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Solution

The fourth proportional to 64,781.75, 97,031.68 and 31,431.42 is: 47,078.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,781.75 : 97,031.68 = 31,431.42 : x
  2. Step 2: Convert to fraction form
    64,781.75/97,031.68 = 31,431.42/x
  3. Step 3: Cross multiply
    64,781.75x = 97,031.68 × 31,431.42
  4. Step 4: Simplify right side
    64,781.75x = 3,049,843,487.39
  5. Step 5: Solve for x
    x = 3,049,843,487.39/64,781.75
  6. Step 6: Final answer
    x = 47,078.74

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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.