Home / 52,412.12-78,650.41-20,816.65

Finding the Fourth Proportional to 52,412.12, 78,650.41 and 20,816.65

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Solution

The fourth proportional to 52,412.12, 78,650.41 and 20,816.65 is: 31,237.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,412.12 : 78,650.41 = 20,816.65 : x
  2. Step 2: Convert to fraction form
    52,412.12/78,650.41 = 20,816.65/x
  3. Step 3: Cross multiply
    52,412.12x = 78,650.41 × 20,816.65
  4. Step 4: Simplify right side
    52,412.12x = 1,637,238,057.33
  5. Step 5: Solve for x
    x = 1,637,238,057.33/52,412.12
  6. Step 6: Final answer
    x = 31,237.78

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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.