Home / 54,435.02-81,657.68-21,157.65

Finding the Fourth Proportional to 54,435.02, 81,657.68 and 21,157.65

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Solution

The fourth proportional to 54,435.02, 81,657.68 and 21,157.65 is: 31,738.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,435.02 : 81,657.68 = 21,157.65 : x
  2. Step 2: Convert to fraction form
    54,435.02/81,657.68 = 21,157.65/x
  3. Step 3: Cross multiply
    54,435.02x = 81,657.68 × 21,157.65
  4. Step 4: Simplify right side
    54,435.02x = 1,727,684,507.46
  5. Step 5: Solve for x
    x = 1,727,684,507.46/54,435.02
  6. Step 6: Final answer
    x = 31,738.48

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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.