Home / 45,331.93-68,020.17-20,389.60

Finding the Fourth Proportional to 45,331.93, 68,020.17 and 20,389.60

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Solution

The fourth proportional to 45,331.93, 68,020.17 and 20,389.60 is: 30,594.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,331.93 : 68,020.17 = 20,389.60 : x
  2. Step 2: Convert to fraction form
    45,331.93/68,020.17 = 20,389.60/x
  3. Step 3: Cross multiply
    45,331.93x = 68,020.17 × 20,389.60
  4. Step 4: Simplify right side
    45,331.93x = 1,386,904,058.23
  5. Step 5: Solve for x
    x = 1,386,904,058.23/45,331.93
  6. Step 6: Final answer
    x = 30,594.42

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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.