Home / 45,655.24-68,431.62-20,657.80

Finding the Fourth Proportional to 45,655.24, 68,431.62 and 20,657.80

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Solution

The fourth proportional to 45,655.24, 68,431.62 and 20,657.80 is: 30,963.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,655.24 : 68,431.62 = 20,657.80 : x
  2. Step 2: Convert to fraction form
    45,655.24/68,431.62 = 20,657.80/x
  3. Step 3: Cross multiply
    45,655.24x = 68,431.62 × 20,657.80
  4. Step 4: Simplify right side
    45,655.24x = 1,413,646,719.64
  5. Step 5: Solve for x
    x = 1,413,646,719.64/45,655.24
  6. Step 6: Final answer
    x = 30,963.52

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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.