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Finding the Fourth Proportional to 56,404.35, 84,609.03 and 31,425.45

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Solution

The fourth proportional to 56,404.35, 84,609.03 and 31,425.45 is: 47,139.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,404.35 : 84,609.03 = 31,425.45 : x
  2. Step 2: Convert to fraction form
    56,404.35/84,609.03 = 31,425.45/x
  3. Step 3: Cross multiply
    56,404.35x = 84,609.03 × 31,425.45
  4. Step 4: Simplify right side
    56,404.35x = 2,658,876,841.81
  5. Step 5: Solve for x
    x = 2,658,876,841.81/56,404.35
  6. Step 6: Final answer
    x = 47,139.57

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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.