Home / 51,986.23-77,979.35-20,411.16

Finding the Fourth Proportional to 51,986.23, 77,979.35 and 20,411.16

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Solution

The fourth proportional to 51,986.23, 77,979.35 and 20,411.16 is: 30,616.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,986.23 : 77,979.35 = 20,411.16 : x
  2. Step 2: Convert to fraction form
    51,986.23/77,979.35 = 20,411.16/x
  3. Step 3: Cross multiply
    51,986.23x = 77,979.35 × 20,411.16
  4. Step 4: Simplify right side
    51,986.23x = 1,591,648,887.49
  5. Step 5: Solve for x
    x = 1,591,648,887.49/51,986.23
  6. Step 6: Final answer
    x = 30,616.74

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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.