Home / 45,608.40-68,455.80-28,112.40

Finding the Fourth Proportional to 45,608.40, 68,455.80 and 28,112.40

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Solution

The fourth proportional to 45,608.40, 68,455.80 and 28,112.40 is: 42,195.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,608.40 : 68,455.80 = 28,112.40 : x
  2. Step 2: Convert to fraction form
    45,608.40/68,455.80 = 28,112.40/x
  3. Step 3: Cross multiply
    45,608.40x = 68,455.80 × 28,112.40
  4. Step 4: Simplify right side
    45,608.40x = 1,924,456,831.92
  5. Step 5: Solve for x
    x = 1,924,456,831.92/45,608.40
  6. Step 6: Final answer
    x = 42,195.23

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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.