Home / 50,831.10-70,145-28,169.50

Finding the Fourth Proportional to 50,831.10, 70,145 and 28,169.50

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Solution

The fourth proportional to 50,831.10, 70,145 and 28,169.50 is: 38,872.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,831.10 : 70,145 = 28,169.50 : x
  2. Step 2: Convert to fraction form
    50,831.10/70,145 = 28,169.50/x
  3. Step 3: Cross multiply
    50,831.10x = 70,145 × 28,169.50
  4. Step 4: Simplify right side
    50,831.10x = 1,975,949,577.50
  5. Step 5: Solve for x
    x = 1,975,949,577.50/50,831.10
  6. Step 6: Final answer
    x = 38,872.85

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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.