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Finding the Fourth Proportional to 64,572.71, 89,109.74 and 35,891.63

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Solution

The fourth proportional to 64,572.71, 89,109.74 and 35,891.63 is: 49,530.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,572.71 : 89,109.74 = 35,891.63 : x
  2. Step 2: Convert to fraction form
    64,572.71/89,109.74 = 35,891.63/x
  3. Step 3: Cross multiply
    64,572.71x = 89,109.74 × 35,891.63
  4. Step 4: Simplify right side
    64,572.71x = 3,198,293,817.48
  5. Step 5: Solve for x
    x = 3,198,293,817.48/64,572.71
  6. Step 6: Final answer
    x = 49,530.12

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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.