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Finding the Fourth Proportional to 92,988.88, 139,404.72 and 40,358.80

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Solution

The fourth proportional to 92,988.88, 139,404.72 and 40,358.80 is: 60,504.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,988.88 : 139,404.72 = 40,358.80 : x
  2. Step 2: Convert to fraction form
    92,988.88/139,404.72 = 40,358.80/x
  3. Step 3: Cross multiply
    92,988.88x = 139,404.72 × 40,358.80
  4. Step 4: Simplify right side
    92,988.88x = 5,626,207,213.54
  5. Step 5: Solve for x
    x = 5,626,207,213.54/92,988.88
  6. Step 6: Final answer
    x = 60,504.09

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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.