Home / 64,990.20-89,685.14-36,695.28

Finding the Fourth Proportional to 64,990.20, 89,685.14 and 36,695.28

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Solution

The fourth proportional to 64,990.20, 89,685.14 and 36,695.28 is: 50,638.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,990.20 : 89,685.14 = 36,695.28 : x
  2. Step 2: Convert to fraction form
    64,990.20/89,685.14 = 36,695.28/x
  3. Step 3: Cross multiply
    64,990.20x = 89,685.14 × 36,695.28
  4. Step 4: Simplify right side
    64,990.20x = 3,291,021,324.14
  5. Step 5: Solve for x
    x = 3,291,021,324.14/64,990.20
  6. Step 6: Final answer
    x = 50,638.73

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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.