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Finding the Fourth Proportional to 64,802.67, 89,432.87 and 36,131.61

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Solution

The fourth proportional to 64,802.67, 89,432.87 and 36,131.61 is: 49,864.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,802.67 : 89,432.87 = 36,131.61 : x
  2. Step 2: Convert to fraction form
    64,802.67/89,432.87 = 36,131.61/x
  3. Step 3: Cross multiply
    64,802.67x = 89,432.87 × 36,131.61
  4. Step 4: Simplify right side
    64,802.67x = 3,231,353,580.02
  5. Step 5: Solve for x
    x = 3,231,353,580.02/64,802.67
  6. Step 6: Final answer
    x = 49,864.51

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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.