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Finding the Fourth Proportional to 86,663.81, 130,006.65 and 29,748.81

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Solution

The fourth proportional to 86,663.81, 130,006.65 and 29,748.81 is: 44,626.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,663.81 : 130,006.65 = 29,748.81 : x
  2. Step 2: Convert to fraction form
    86,663.81/130,006.65 = 29,748.81/x
  3. Step 3: Cross multiply
    86,663.81x = 130,006.65 × 29,748.81
  4. Step 4: Simplify right side
    86,663.81x = 3,867,542,997.38
  5. Step 5: Solve for x
    x = 3,867,542,997.38/86,663.81
  6. Step 6: Final answer
    x = 44,626.97

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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.