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Finding the Fourth Proportional to 55,765.91, 83,647.49 and 13,645.65

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Solution

The fourth proportional to 55,765.91, 83,647.49 and 13,645.65 is: 20,468.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,765.91 : 83,647.49 = 13,645.65 : x
  2. Step 2: Convert to fraction form
    55,765.91/83,647.49 = 13,645.65/x
  3. Step 3: Cross multiply
    55,765.91x = 83,647.49 × 13,645.65
  4. Step 4: Simplify right side
    55,765.91x = 1,141,424,303.69
  5. Step 5: Solve for x
    x = 1,141,424,303.69/55,765.91
  6. Step 6: Final answer
    x = 20,468.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.