Home / 54,436.86-81,660.45-21,159.50

Finding the Fourth Proportional to 54,436.86, 81,660.45 and 21,159.50

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Solution

The fourth proportional to 54,436.86, 81,660.45 and 21,159.50 is: 31,741.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,436.86 : 81,660.45 = 21,159.50 : x
  2. Step 2: Convert to fraction form
    54,436.86/81,660.45 = 21,159.50/x
  3. Step 3: Cross multiply
    54,436.86x = 81,660.45 × 21,159.50
  4. Step 4: Simplify right side
    54,436.86x = 1,727,893,962.82
  5. Step 5: Solve for x
    x = 1,727,893,962.82/54,436.86
  6. Step 6: Final answer
    x = 31,741.25

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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.