Home / 52,109.08-78,162.92-12,666.08

Finding the Fourth Proportional to 52,109.08, 78,162.92 and 12,666.08

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Solution

The fourth proportional to 52,109.08, 78,162.92 and 12,666.08 is: 18,998.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,109.08 : 78,162.92 = 12,666.08 : x
  2. Step 2: Convert to fraction form
    52,109.08/78,162.92 = 12,666.08/x
  3. Step 3: Cross multiply
    52,109.08x = 78,162.92 × 12,666.08
  4. Step 4: Simplify right side
    52,109.08x = 990,017,797.75
  5. Step 5: Solve for x
    x = 990,017,797.75/52,109.08
  6. Step 6: Final answer
    x = 18,998.95

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1.5x scale

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.