Home / 52,211.75-78,326.55-20,605.32

Finding the Fourth Proportional to 52,211.75, 78,326.55 and 20,605.32

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Solution

The fourth proportional to 52,211.75, 78,326.55 and 20,605.32 is: 30,911.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,211.75 : 78,326.55 = 20,605.32 : x
  2. Step 2: Convert to fraction form
    52,211.75/78,326.55 = 20,605.32/x
  3. Step 3: Cross multiply
    52,211.75x = 78,326.55 × 20,605.32
  4. Step 4: Simplify right side
    52,211.75x = 1,613,943,627.25
  5. Step 5: Solve for x
    x = 1,613,943,627.25/52,211.75
  6. Step 6: Final answer
    x = 30,911.51

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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.