Home / 52,191.09-78,328.15-18,920.66

Finding the Fourth Proportional to 52,191.09, 78,328.15 and 18,920.66

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Solution

The fourth proportional to 52,191.09, 78,328.15 and 18,920.66 is: 28,396.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,191.09 : 78,328.15 = 18,920.66 : x
  2. Step 2: Convert to fraction form
    52,191.09/78,328.15 = 18,920.66/x
  3. Step 3: Cross multiply
    52,191.09x = 78,328.15 × 18,920.66
  4. Step 4: Simplify right side
    52,191.09x = 1,482,019,855.64
  5. Step 5: Solve for x
    x = 1,482,019,855.64/52,191.09
  6. Step 6: Final answer
    x = 28,396.03

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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.