Home / 56,669.87-78,206.30-31,179.17

Finding the Fourth Proportional to 56,669.87, 78,206.30 and 31,179.17

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Solution

The fourth proportional to 56,669.87, 78,206.30 and 31,179.17 is: 43,028.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,669.87 : 78,206.30 = 31,179.17 : x
  2. Step 2: Convert to fraction form
    56,669.87/78,206.30 = 31,179.17/x
  3. Step 3: Cross multiply
    56,669.87x = 78,206.30 × 31,179.17
  4. Step 4: Simplify right side
    56,669.87x = 2,438,406,975.84
  5. Step 5: Solve for x
    x = 2,438,406,975.84/56,669.87
  6. Step 6: Final answer
    x = 43,028.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.