Home / 53,143.64-79,719.57-21,538.65

Finding the Fourth Proportional to 53,143.64, 79,719.57 and 21,538.65

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Solution

The fourth proportional to 53,143.64, 79,719.57 and 21,538.65 is: 32,309.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,143.64 : 79,719.57 = 21,538.65 : x
  2. Step 2: Convert to fraction form
    53,143.64/79,719.57 = 21,538.65/x
  3. Step 3: Cross multiply
    53,143.64x = 79,719.57 × 21,538.65
  4. Step 4: Simplify right side
    53,143.64x = 1,717,051,916.38
  5. Step 5: Solve for x
    x = 1,717,051,916.38/53,143.64
  6. Step 6: Final answer
    x = 32,309.64

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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.