Home / 57,867.14-86,807.69-20,419.51

Finding the Fourth Proportional to 57,867.14, 86,807.69 and 20,419.51

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Solution

The fourth proportional to 57,867.14, 86,807.69 and 20,419.51 is: 30,631.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,867.14 : 86,807.69 = 20,419.51 : x
  2. Step 2: Convert to fraction form
    57,867.14/86,807.69 = 20,419.51/x
  3. Step 3: Cross multiply
    57,867.14x = 86,807.69 × 20,419.51
  4. Step 4: Simplify right side
    57,867.14x = 1,772,570,494.03
  5. Step 5: Solve for x
    x = 1,772,570,494.03/57,867.14
  6. Step 6: Final answer
    x = 30,631.73

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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.