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Finding the Fourth Proportional to 64,571.71, 89,108.36 and 35,890.63

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Solution

The fourth proportional to 64,571.71, 89,108.36 and 35,890.63 is: 49,528.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,571.71 : 89,108.36 = 35,890.63 : x
  2. Step 2: Convert to fraction form
    64,571.71/89,108.36 = 35,890.63/x
  3. Step 3: Cross multiply
    64,571.71x = 89,108.36 × 35,890.63
  4. Step 4: Simplify right side
    64,571.71x = 3,198,155,045.62
  5. Step 5: Solve for x
    x = 3,198,155,045.62/64,571.71
  6. Step 6: Final answer
    x = 49,528.74

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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.