Home / 52,100.92-78,150.84-12,658.51

Finding the Fourth Proportional to 52,100.92, 78,150.84 and 12,658.51

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Solution

The fourth proportional to 52,100.92, 78,150.84 and 12,658.51 is: 18,987.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,100.92 : 78,150.84 = 12,658.51 : x
  2. Step 2: Convert to fraction form
    52,100.92/78,150.84 = 12,658.51/x
  3. Step 3: Cross multiply
    52,100.92x = 78,150.84 × 12,658.51
  4. Step 4: Simplify right side
    52,100.92x = 989,273,189.65
  5. Step 5: Solve for x
    x = 989,273,189.65/52,100.92
  6. Step 6: Final answer
    x = 18,987.63

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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.