Home / 52,557.30-78,777.32-20,959.07

Finding the Fourth Proportional to 52,557.30, 78,777.32 and 20,959.07

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Solution

The fourth proportional to 52,557.30, 78,777.32 and 20,959.07 is: 31,415.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,557.30 : 78,777.32 = 20,959.07 : x
  2. Step 2: Convert to fraction form
    52,557.30/78,777.32 = 20,959.07/x
  3. Step 3: Cross multiply
    52,557.30x = 78,777.32 × 20,959.07
  4. Step 4: Simplify right side
    52,557.30x = 1,651,098,865.61
  5. Step 5: Solve for x
    x = 1,651,098,865.61/52,557.30
  6. Step 6: Final answer
    x = 31,415.21

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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.