Home / 45,411.90-68,119.56-20,447.16

Finding the Fourth Proportional to 45,411.90, 68,119.56 and 20,447.16

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Solution

The fourth proportional to 45,411.90, 68,119.56 and 20,447.16 is: 30,671.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,411.90 : 68,119.56 = 20,447.16 : x
  2. Step 2: Convert to fraction form
    45,411.90/68,119.56 = 20,447.16/x
  3. Step 3: Cross multiply
    45,411.90x = 68,119.56 × 20,447.16
  4. Step 4: Simplify right side
    45,411.90x = 1,392,851,542.45
  5. Step 5: Solve for x
    x = 1,392,851,542.45/45,411.90
  6. Step 6: Final answer
    x = 30,671.51

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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.