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Finding the Fourth Proportional to 65,257.36, 90,061.44 and 36,576.88

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Solution

The fourth proportional to 65,257.36, 90,061.44 and 36,576.88 is: 50,479.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,257.36 : 90,061.44 = 36,576.88 : x
  2. Step 2: Convert to fraction form
    65,257.36/90,061.44 = 36,576.88/x
  3. Step 3: Cross multiply
    65,257.36x = 90,061.44 × 36,576.88
  4. Step 4: Simplify right side
    65,257.36x = 3,294,166,483.51
  5. Step 5: Solve for x
    x = 3,294,166,483.51/65,257.36
  6. Step 6: Final answer
    x = 50,479.62

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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.