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Finding the Fourth Proportional to 64,743.79, 89,358.84 and 36,449.48

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Solution

The fourth proportional to 64,743.79, 89,358.84 and 36,449.48 is: 50,307.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,743.79 : 89,358.84 = 36,449.48 : x
  2. Step 2: Convert to fraction form
    64,743.79/89,358.84 = 36,449.48/x
  3. Step 3: Cross multiply
    64,743.79x = 89,358.84 × 36,449.48
  4. Step 4: Simplify right side
    64,743.79x = 3,257,083,139.70
  5. Step 5: Solve for x
    x = 3,257,083,139.70/64,743.79
  6. Step 6: Final answer
    x = 50,307.27

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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.