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Finding the Fourth Proportional to 50,431.68, 75,664.80 and 19,275.84

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Solution

The fourth proportional to 50,431.68, 75,664.80 and 19,275.84 is: 28,920.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,431.68 : 75,664.80 = 19,275.84 : x
  2. Step 2: Convert to fraction form
    50,431.68/75,664.80 = 19,275.84/x
  3. Step 3: Cross multiply
    50,431.68x = 75,664.80 × 19,275.84
  4. Step 4: Simplify right side
    50,431.68x = 1,458,502,578.43
  5. Step 5: Solve for x
    x = 1,458,502,578.43/50,431.68
  6. Step 6: Final answer
    x = 28,920.36

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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.