Home / 51,912.36-77,875.05-20,318.34

Finding the Fourth Proportional to 51,912.36, 77,875.05 and 20,318.34

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Solution

The fourth proportional to 51,912.36, 77,875.05 and 20,318.34 is: 30,480.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,912.36 : 77,875.05 = 20,318.34 : x
  2. Step 2: Convert to fraction form
    51,912.36/77,875.05 = 20,318.34/x
  3. Step 3: Cross multiply
    51,912.36x = 77,875.05 × 20,318.34
  4. Step 4: Simplify right side
    51,912.36x = 1,582,292,111.64
  5. Step 5: Solve for x
    x = 1,582,292,111.64/51,912.36
  6. Step 6: Final answer
    x = 30,480.07

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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.