Home / 57,867.47-86,808.15-20,419.81

Finding the Fourth Proportional to 57,867.47, 86,808.15 and 20,419.81

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Solution

The fourth proportional to 57,867.47, 86,808.15 and 20,419.81 is: 30,632.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,867.47 : 86,808.15 = 20,419.81 : x
  2. Step 2: Convert to fraction form
    57,867.47/86,808.15 = 20,419.81/x
  3. Step 3: Cross multiply
    57,867.47x = 86,808.15 × 20,419.81
  4. Step 4: Simplify right side
    57,867.47x = 1,772,606,069.90
  5. Step 5: Solve for x
    x = 1,772,606,069.90/57,867.47
  6. Step 6: Final answer
    x = 30,632.17

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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.