Home / 81,415.80-121,943.28-62,557.04

Finding the Fourth Proportional to 81,415.80, 121,943.28 and 62,557.04

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Solution

The fourth proportional to 81,415.80, 121,943.28 and 62,557.04 is: 93,696.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,415.80 : 121,943.28 = 62,557.04 : x
  2. Step 2: Convert to fraction form
    81,415.80/121,943.28 = 62,557.04/x
  3. Step 3: Cross multiply
    81,415.80x = 121,943.28 × 62,557.04
  4. Step 4: Simplify right side
    81,415.80x = 7,628,410,644.69
  5. Step 5: Solve for x
    x = 7,628,410,644.69/81,415.80
  6. Step 6: Final answer
    x = 93,696.93

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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.