Home / 97,128.05-145,778.61-49,775.39

Finding the Fourth Proportional to 97,128.05, 145,778.61 and 49,775.39

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Solution

The fourth proportional to 97,128.05, 145,778.61 and 49,775.39 is: 74,707.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,128.05 : 145,778.61 = 49,775.39 : x
  2. Step 2: Convert to fraction form
    97,128.05/145,778.61 = 49,775.39/x
  3. Step 3: Cross multiply
    97,128.05x = 145,778.61 × 49,775.39
  4. Step 4: Simplify right side
    97,128.05x = 7,256,187,166.41
  5. Step 5: Solve for x
    x = 7,256,187,166.41/97,128.05
  6. Step 6: Final answer
    x = 74,707.43

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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.