Home / 52,158.96-78,191.68-18,871.20

Finding the Fourth Proportional to 52,158.96, 78,191.68 and 18,871.20

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Solution

The fourth proportional to 52,158.96, 78,191.68 and 18,871.20 is: 28,289.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,158.96 : 78,191.68 = 18,871.20 : x
  2. Step 2: Convert to fraction form
    52,158.96/78,191.68 = 18,871.20/x
  3. Step 3: Cross multiply
    52,158.96x = 78,191.68 × 18,871.20
  4. Step 4: Simplify right side
    52,158.96x = 1,475,570,831.62
  5. Step 5: Solve for x
    x = 1,475,570,831.62/52,158.96
  6. Step 6: Final answer
    x = 28,289.88

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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.