Home / 68,454.87-102,539.21-55,055.45

Finding the Fourth Proportional to 68,454.87, 102,539.21 and 55,055.45

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Solution

The fourth proportional to 68,454.87, 102,539.21 and 55,055.45 is: 82,468.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,454.87 : 102,539.21 = 55,055.45 : x
  2. Step 2: Convert to fraction form
    68,454.87/102,539.21 = 55,055.45/x
  3. Step 3: Cross multiply
    68,454.87x = 102,539.21 × 55,055.45
  4. Step 4: Simplify right side
    68,454.87x = 5,645,341,561.22
  5. Step 5: Solve for x
    x = 5,645,341,561.22/68,454.87
  6. Step 6: Final answer
    x = 82,468.08

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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.