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Finding the Fourth Proportional to 69,769.78, 96,281.78 and 37,938.68

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Solution

The fourth proportional to 69,769.78, 96,281.78 and 37,938.68 is: 52,355.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,769.78 : 96,281.78 = 37,938.68 : x
  2. Step 2: Convert to fraction form
    69,769.78/96,281.78 = 37,938.68/x
  3. Step 3: Cross multiply
    69,769.78x = 96,281.78 × 37,938.68
  4. Step 4: Simplify right side
    69,769.78x = 3,652,803,641.25
  5. Step 5: Solve for x
    x = 3,652,803,641.25/69,769.78
  6. Step 6: Final answer
    x = 52,355.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.