Home / 52,212.45-78,254.55-20,590.77

Finding the Fourth Proportional to 52,212.45, 78,254.55 and 20,590.77

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Solution

The fourth proportional to 52,212.45, 78,254.55 and 20,590.77 is: 30,860.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,212.45 : 78,254.55 = 20,590.77 : x
  2. Step 2: Convert to fraction form
    52,212.45/78,254.55 = 20,590.77/x
  3. Step 3: Cross multiply
    52,212.45x = 78,254.55 × 20,590.77
  4. Step 4: Simplify right side
    52,212.45x = 1,611,321,440.50
  5. Step 5: Solve for x
    x = 1,611,321,440.50/52,212.45
  6. Step 6: Final answer
    x = 30,860.87

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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.