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Finding the Fourth Proportional to 85,308.67, 127,859.23 and 60,355.91

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Solution

The fourth proportional to 85,308.67, 127,859.23 and 60,355.91 is: 90,460.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,308.67 : 127,859.23 = 60,355.91 : x
  2. Step 2: Convert to fraction form
    85,308.67/127,859.23 = 60,355.91/x
  3. Step 3: Cross multiply
    85,308.67x = 127,859.23 × 60,355.91
  4. Step 4: Simplify right side
    85,308.67x = 7,717,060,178.55
  5. Step 5: Solve for x
    x = 7,717,060,178.55/85,308.67
  6. Step 6: Final answer
    x = 90,460.44

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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.