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Finding the Fourth Proportional to 54,443.93, 81,644.81 and 21,159.63

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Solution

The fourth proportional to 54,443.93, 81,644.81 and 21,159.63 is: 31,731.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,443.93 : 81,644.81 = 21,159.63 : x
  2. Step 2: Convert to fraction form
    54,443.93/81,644.81 = 21,159.63/x
  3. Step 3: Cross multiply
    54,443.93x = 81,644.81 × 21,159.63
  4. Step 4: Simplify right side
    54,443.93x = 1,727,573,865.22
  5. Step 5: Solve for x
    x = 1,727,573,865.22/54,443.93
  6. Step 6: Final answer
    x = 31,731.25

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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.