Home / 81,420.32-122,120.76-22,261.16

Finding the Fourth Proportional to 81,420.32, 122,120.76 and 22,261.16

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Solution

The fourth proportional to 81,420.32, 122,120.76 and 22,261.16 is: 33,389.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,420.32 : 122,120.76 = 22,261.16 : x
  2. Step 2: Convert to fraction form
    81,420.32/122,120.76 = 22,261.16/x
  3. Step 3: Cross multiply
    81,420.32x = 122,120.76 × 22,261.16
  4. Step 4: Simplify right side
    81,420.32x = 2,718,549,777.68
  5. Step 5: Solve for x
    x = 2,718,549,777.68/81,420.32
  6. Step 6: Final answer
    x = 33,389.08

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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.