Home / 52,185.96-78,278.94-12,742.61

Finding the Fourth Proportional to 52,185.96, 78,278.94 and 12,742.61

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Solution

The fourth proportional to 52,185.96, 78,278.94 and 12,742.61 is: 19,113.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,185.96 : 78,278.94 = 12,742.61 : x
  2. Step 2: Convert to fraction form
    52,185.96/78,278.94 = 12,742.61/x
  3. Step 3: Cross multiply
    52,185.96x = 78,278.94 × 12,742.61
  4. Step 4: Simplify right side
    52,185.96x = 997,477,612.24
  5. Step 5: Solve for x
    x = 997,477,612.24/52,185.96
  6. Step 6: Final answer
    x = 19,113.91

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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.