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Finding the Fourth Proportional to 85,330.89, 127,748.43 and 49,683.47

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Solution

The fourth proportional to 85,330.89, 127,748.43 and 49,683.47 is: 74,380.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,330.89 : 127,748.43 = 49,683.47 : x
  2. Step 2: Convert to fraction form
    85,330.89/127,748.43 = 49,683.47/x
  3. Step 3: Cross multiply
    85,330.89x = 127,748.43 × 49,683.47
  4. Step 4: Simplify right side
    85,330.89x = 6,346,984,650.71
  5. Step 5: Solve for x
    x = 6,346,984,650.71/85,330.89
  6. Step 6: Final answer
    x = 74,380.86

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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.