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Finding the Fourth Proportional to 53,047.31, 79,568.93 and 17,986.93

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Solution

The fourth proportional to 53,047.31, 79,568.93 and 17,986.93 is: 26,979.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,047.31 : 79,568.93 = 17,986.93 : x
  2. Step 2: Convert to fraction form
    53,047.31/79,568.93 = 17,986.93/x
  3. Step 3: Cross multiply
    53,047.31x = 79,568.93 × 17,986.93
  4. Step 4: Simplify right side
    53,047.31x = 1,431,200,620.13
  5. Step 5: Solve for x
    x = 1,431,200,620.13/53,047.31
  6. Step 6: Final answer
    x = 26,979.70

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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.