Home / 89,724.51-134,365.19-66,873.60

Finding the Fourth Proportional to 89,724.51, 134,365.19 and 66,873.60

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Solution

The fourth proportional to 89,724.51, 134,365.19 and 66,873.60 is: 100,145.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,724.51 : 134,365.19 = 66,873.60 : x
  2. Step 2: Convert to fraction form
    89,724.51/134,365.19 = 66,873.60/x
  3. Step 3: Cross multiply
    89,724.51x = 134,365.19 × 66,873.60
  4. Step 4: Simplify right side
    89,724.51x = 8,985,483,635.62
  5. Step 5: Solve for x
    x = 8,985,483,635.62/89,724.51
  6. Step 6: Final answer
    x = 100,145.25

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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.