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Finding the Fourth Proportional to 65,119.38, 89,873.20 and 36,830.68

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Solution

The fourth proportional to 65,119.38, 89,873.20 and 36,830.68 is: 50,831.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,119.38 : 89,873.20 = 36,830.68 : x
  2. Step 2: Convert to fraction form
    65,119.38/89,873.20 = 36,830.68/x
  3. Step 3: Cross multiply
    65,119.38x = 89,873.20 × 36,830.68
  4. Step 4: Simplify right side
    65,119.38x = 3,310,091,069.78
  5. Step 5: Solve for x
    x = 3,310,091,069.78/65,119.38
  6. Step 6: Final answer
    x = 50,831.12

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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.