Home / 53,415.49-80,141.73-20,145.10

Finding the Fourth Proportional to 53,415.49, 80,141.73 and 20,145.10

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Solution

The fourth proportional to 53,415.49, 80,141.73 and 20,145.10 is: 30,224.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,415.49 : 80,141.73 = 20,145.10 : x
  2. Step 2: Convert to fraction form
    53,415.49/80,141.73 = 20,145.10/x
  3. Step 3: Cross multiply
    53,415.49x = 80,141.73 × 20,145.10
  4. Step 4: Simplify right side
    53,415.49x = 1,614,463,165.02
  5. Step 5: Solve for x
    x = 1,614,463,165.02/53,415.49
  6. Step 6: Final answer
    x = 30,224.63

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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.