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Finding the Fourth Proportional to 53,284.50, 79,949.43 and 19,999.71

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Solution

The fourth proportional to 53,284.50, 79,949.43 and 19,999.71 is: 30,008.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,284.50 : 79,949.43 = 19,999.71 : x
  2. Step 2: Convert to fraction form
    53,284.50/79,949.43 = 19,999.71/x
  3. Step 3: Cross multiply
    53,284.50x = 79,949.43 × 19,999.71
  4. Step 4: Simplify right side
    53,284.50x = 1,598,965,414.67
  5. Step 5: Solve for x
    x = 1,598,965,414.67/53,284.50
  6. Step 6: Final answer
    x = 30,008.08

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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.