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Finding the Fourth Proportional to 70,831.20, 106,246.80 and 48,712.80

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Solution

The fourth proportional to 70,831.20, 106,246.80 and 48,712.80 is: 73,069.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,831.20 : 106,246.80 = 48,712.80 : x
  2. Step 2: Convert to fraction form
    70,831.20/106,246.80 = 48,712.80/x
  3. Step 3: Cross multiply
    70,831.20x = 106,246.80 × 48,712.80
  4. Step 4: Simplify right side
    70,831.20x = 5,175,579,119.04
  5. Step 5: Solve for x
    x = 5,175,579,119.04/70,831.20
  6. Step 6: Final answer
    x = 73,069.20

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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.