Home / 51,409.08-77,113.62-18,111.60

Finding the Fourth Proportional to 51,409.08, 77,113.62 and 18,111.60

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Solution

The fourth proportional to 51,409.08, 77,113.62 and 18,111.60 is: 27,167.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,409.08 : 77,113.62 = 18,111.60 : x
  2. Step 2: Convert to fraction form
    51,409.08/77,113.62 = 18,111.60/x
  3. Step 3: Cross multiply
    51,409.08x = 77,113.62 × 18,111.60
  4. Step 4: Simplify right side
    51,409.08x = 1,396,651,039.99
  5. Step 5: Solve for x
    x = 1,396,651,039.99/51,409.08
  6. Step 6: Final answer
    x = 27,167.40

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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.