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Finding the Fourth Proportional to 76,698.45, 114,831.39 and 40,593.12

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Solution

The fourth proportional to 76,698.45, 114,831.39 and 40,593.12 is: 60,775.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,698.45 : 114,831.39 = 40,593.12 : x
  2. Step 2: Convert to fraction form
    76,698.45/114,831.39 = 40,593.12/x
  3. Step 3: Cross multiply
    76,698.45x = 114,831.39 × 40,593.12
  4. Step 4: Simplify right side
    76,698.45x = 4,661,364,394.04
  5. Step 5: Solve for x
    x = 4,661,364,394.04/76,698.45
  6. Step 6: Final answer
    x = 60,775.21

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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.