Home / 77,154.80-115,732.20-35,579.12

Finding the Fourth Proportional to 77,154.80, 115,732.20 and 35,579.12

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Solution

The fourth proportional to 77,154.80, 115,732.20 and 35,579.12 is: 53,368.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,154.80 : 115,732.20 = 35,579.12 : x
  2. Step 2: Convert to fraction form
    77,154.80/115,732.20 = 35,579.12/x
  3. Step 3: Cross multiply
    77,154.80x = 115,732.20 × 35,579.12
  4. Step 4: Simplify right side
    77,154.80x = 4,117,649,831.66
  5. Step 5: Solve for x
    x = 4,117,649,831.66/77,154.80
  6. Step 6: Final answer
    x = 53,368.68

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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.