Home / 64,983.20-89,682.80-39,483.65

Finding the Fourth Proportional to 64,983.20, 89,682.80 and 39,483.65

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Solution

The fourth proportional to 64,983.20, 89,682.80 and 39,483.65 is: 54,491.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,983.20 : 89,682.80 = 39,483.65 : x
  2. Step 2: Convert to fraction form
    64,983.20/89,682.80 = 39,483.65/x
  3. Step 3: Cross multiply
    64,983.20x = 89,682.80 × 39,483.65
  4. Step 4: Simplify right side
    64,983.20x = 3,541,004,313.01
  5. Step 5: Solve for x
    x = 3,541,004,313.01/64,983.20
  6. Step 6: Final answer
    x = 54,491.08

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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.