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Finding the Fourth Proportional to 53,356.65, 80,039.03 and 15,913.80

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Solution

The fourth proportional to 53,356.65, 80,039.03 and 15,913.80 is: 23,871.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,356.65 : 80,039.03 = 15,913.80 : x
  2. Step 2: Convert to fraction form
    53,356.65/80,039.03 = 15,913.80/x
  3. Step 3: Cross multiply
    53,356.65x = 80,039.03 × 15,913.80
  4. Step 4: Simplify right side
    53,356.65x = 1,273,725,036.05
  5. Step 5: Solve for x
    x = 1,273,725,036.05/53,356.65
  6. Step 6: Final answer
    x = 23,871.91

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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.