Home / 53,153.12-79,732.59-21,558.49

Finding the Fourth Proportional to 53,153.12, 79,732.59 and 21,558.49

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Solution

The fourth proportional to 53,153.12, 79,732.59 and 21,558.49 is: 32,338.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,153.12 : 79,732.59 = 21,558.49 : x
  2. Step 2: Convert to fraction form
    53,153.12/79,732.59 = 21,558.49/x
  3. Step 3: Cross multiply
    53,153.12x = 79,732.59 × 21,558.49
  4. Step 4: Simplify right side
    53,153.12x = 1,718,913,964.01
  5. Step 5: Solve for x
    x = 1,718,913,964.01/53,153.12
  6. Step 6: Final answer
    x = 32,338.91

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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.