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Finding the Fourth Proportional to 64,949.88, 89,628.96 and 36,658.20

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Solution

The fourth proportional to 64,949.88, 89,628.96 and 36,658.20 is: 50,587.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,949.88 : 89,628.96 = 36,658.20 : x
  2. Step 2: Convert to fraction form
    64,949.88/89,628.96 = 36,658.20/x
  3. Step 3: Cross multiply
    64,949.88x = 89,628.96 × 36,658.20
  4. Step 4: Simplify right side
    64,949.88x = 3,285,636,341.47
  5. Step 5: Solve for x
    x = 3,285,636,341.47/64,949.88
  6. Step 6: Final answer
    x = 50,587.26

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1.5x scale

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.