Home / 52,125.86-78,159.16-20,518.79

Finding the Fourth Proportional to 52,125.86, 78,159.16 and 20,518.79

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Solution

The fourth proportional to 52,125.86, 78,159.16 and 20,518.79 is: 30,766.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,125.86 : 78,159.16 = 20,518.79 : x
  2. Step 2: Convert to fraction form
    52,125.86/78,159.16 = 20,518.79/x
  3. Step 3: Cross multiply
    52,125.86x = 78,159.16 × 20,518.79
  4. Step 4: Simplify right side
    52,125.86x = 1,603,731,390.62
  5. Step 5: Solve for x
    x = 1,603,731,390.62/52,125.86
  6. Step 6: Final answer
    x = 30,766.52

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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.