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Finding the Fourth Proportional to 64,990.48, 89,675.13 and 37,767.79

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Solution

The fourth proportional to 64,990.48, 89,675.13 and 37,767.79 is: 52,112.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,990.48 : 89,675.13 = 37,767.79 : x
  2. Step 2: Convert to fraction form
    64,990.48/89,675.13 = 37,767.79/x
  3. Step 3: Cross multiply
    64,990.48x = 89,675.13 × 37,767.79
  4. Step 4: Simplify right side
    64,990.48x = 3,386,831,478.06
  5. Step 5: Solve for x
    x = 3,386,831,478.06/64,990.48
  6. Step 6: Final answer
    x = 52,112.73

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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.