Home / 53,988-80,979.36-18,924.96

Finding the Fourth Proportional to 53,988, 80,979.36 and 18,924.96

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Solution

The fourth proportional to 53,988, 80,979.36 and 18,924.96 is: 28,386.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,988 : 80,979.36 = 18,924.96 : x
  2. Step 2: Convert to fraction form
    53,988/80,979.36 = 18,924.96/x
  3. Step 3: Cross multiply
    53,988x = 80,979.36 × 18,924.96
  4. Step 4: Simplify right side
    53,988x = 1,532,531,148.83
  5. Step 5: Solve for x
    x = 1,532,531,148.83/53,988
  6. Step 6: Final answer
    x = 28,386.51

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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.