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Finding the Fourth Proportional to 65,044.72, 89,763.45 and 36,749.80

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Solution

The fourth proportional to 65,044.72, 89,763.45 and 36,749.80 is: 50,715.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,044.72 : 89,763.45 = 36,749.80 : x
  2. Step 2: Convert to fraction form
    65,044.72/89,763.45 = 36,749.80/x
  3. Step 3: Cross multiply
    65,044.72x = 89,763.45 × 36,749.80
  4. Step 4: Simplify right side
    65,044.72x = 3,298,788,834.81
  5. Step 5: Solve for x
    x = 3,298,788,834.81/65,044.72
  6. Step 6: Final answer
    x = 50,715.71

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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.