Home / 51,798.29-77,685.91-20,209.19

Finding the Fourth Proportional to 51,798.29, 77,685.91 and 20,209.19

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Solution

The fourth proportional to 51,798.29, 77,685.91 and 20,209.19 is: 30,309.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,798.29 : 77,685.91 = 20,209.19 : x
  2. Step 2: Convert to fraction form
    51,798.29/77,685.91 = 20,209.19/x
  3. Step 3: Cross multiply
    51,798.29x = 77,685.91 × 20,209.19
  4. Step 4: Simplify right side
    51,798.29x = 1,569,968,876.56
  5. Step 5: Solve for x
    x = 1,569,968,876.56/51,798.29
  6. Step 6: Final answer
    x = 30,309.28

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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.