Home / 85,521.69-117,990.99-55,345.14

Finding the Fourth Proportional to 85,521.69, 117,990.99 and 55,345.14

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Solution

The fourth proportional to 85,521.69, 117,990.99 and 55,345.14 is: 76,357.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,521.69 : 117,990.99 = 55,345.14 : x
  2. Step 2: Convert to fraction form
    85,521.69/117,990.99 = 55,345.14/x
  3. Step 3: Cross multiply
    85,521.69x = 117,990.99 × 55,345.14
  4. Step 4: Simplify right side
    85,521.69x = 6,530,227,860.29
  5. Step 5: Solve for x
    x = 6,530,227,860.29/85,521.69
  6. Step 6: Final answer
    x = 76,357.56

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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.