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Finding the Fourth Proportional to 75,271, 112,906.56 and 19,115.32

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Solution

The fourth proportional to 75,271, 112,906.56 and 19,115.32 is: 28,673.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,271 : 112,906.56 = 19,115.32 : x
  2. Step 2: Convert to fraction form
    75,271/112,906.56 = 19,115.32/x
  3. Step 3: Cross multiply
    75,271x = 112,906.56 × 19,115.32
  4. Step 4: Simplify right side
    75,271x = 2,158,245,024.50
  5. Step 5: Solve for x
    x = 2,158,245,024.50/75,271
  6. Step 6: Final answer
    x = 28,673.00

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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.