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Finding the Fourth Proportional to 64,882.65, 89,544.32 and 39,383.14

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Solution

The fourth proportional to 64,882.65, 89,544.32 and 39,383.14 is: 54,352.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,882.65 : 89,544.32 = 39,383.14 : x
  2. Step 2: Convert to fraction form
    64,882.65/89,544.32 = 39,383.14/x
  3. Step 3: Cross multiply
    64,882.65x = 89,544.32 × 39,383.14
  4. Step 4: Simplify right side
    64,882.65x = 3,526,535,846.13
  5. Step 5: Solve for x
    x = 3,526,535,846.13/64,882.65
  6. Step 6: Final answer
    x = 54,352.52

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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.