Home / 52,158.20-78,217.65-18,870.03

Finding the Fourth Proportional to 52,158.20, 78,217.65 and 18,870.03

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Solution

The fourth proportional to 52,158.20, 78,217.65 and 18,870.03 is: 28,297.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,158.20 : 78,217.65 = 18,870.03 : x
  2. Step 2: Convert to fraction form
    52,158.20/78,217.65 = 18,870.03/x
  3. Step 3: Cross multiply
    52,158.20x = 78,217.65 × 18,870.03
  4. Step 4: Simplify right side
    52,158.20x = 1,475,969,402.03
  5. Step 5: Solve for x
    x = 1,475,969,402.03/52,158.20
  6. Step 6: Final answer
    x = 28,297.94

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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.