Home / 52,077.94-78,120.56-20,913.19

Finding the Fourth Proportional to 52,077.94, 78,120.56 and 20,913.19

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Solution

The fourth proportional to 52,077.94, 78,120.56 and 20,913.19 is: 31,371.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,077.94 : 78,120.56 = 20,913.19 : x
  2. Step 2: Convert to fraction form
    52,077.94/78,120.56 = 20,913.19/x
  3. Step 3: Cross multiply
    52,077.94x = 78,120.56 × 20,913.19
  4. Step 4: Simplify right side
    52,077.94x = 1,633,749,971.17
  5. Step 5: Solve for x
    x = 1,633,749,971.17/52,077.94
  6. Step 6: Final answer
    x = 31,371.25

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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.