Home / 36,138.78-49,875.21-22,720.32

Finding the Fourth Proportional to 36,138.78, 49,875.21 and 22,720.32

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Solution

The fourth proportional to 36,138.78, 49,875.21 and 22,720.32 is: 31,356.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,138.78 : 49,875.21 = 22,720.32 : x
  2. Step 2: Convert to fraction form
    36,138.78/49,875.21 = 22,720.32/x
  3. Step 3: Cross multiply
    36,138.78x = 49,875.21 × 22,720.32
  4. Step 4: Simplify right side
    36,138.78x = 1,133,180,731.27
  5. Step 5: Solve for x
    x = 1,133,180,731.27/36,138.78
  6. Step 6: Final answer
    x = 31,356.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.