Home / 53,979.45-80,966.61-18,916.44

Finding the Fourth Proportional to 53,979.45, 80,966.61 and 18,916.44

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Solution

The fourth proportional to 53,979.45, 80,966.61 and 18,916.44 is: 28,373.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,979.45 : 80,966.61 = 18,916.44 : x
  2. Step 2: Convert to fraction form
    53,979.45/80,966.61 = 18,916.44/x
  3. Step 3: Cross multiply
    53,979.45x = 80,966.61 × 18,916.44
  4. Step 4: Simplify right side
    53,979.45x = 1,531,600,020.07
  5. Step 5: Solve for x
    x = 1,531,600,020.07/53,979.45
  6. Step 6: Final answer
    x = 28,373.76

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1.5x scale

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.