Home / 80,775.32-111,234.76-62,840.12

Finding the Fourth Proportional to 80,775.32, 111,234.76 and 62,840.12

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Solution

The fourth proportional to 80,775.32, 111,234.76 and 62,840.12 is: 86,536.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,775.32 : 111,234.76 = 62,840.12 : x
  2. Step 2: Convert to fraction form
    80,775.32/111,234.76 = 62,840.12/x
  3. Step 3: Cross multiply
    80,775.32x = 111,234.76 × 62,840.12
  4. Step 4: Simplify right side
    80,775.32x = 6,990,005,666.57
  5. Step 5: Solve for x
    x = 6,990,005,666.57/80,775.32
  6. Step 6: Final answer
    x = 86,536.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.