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Finding the Fourth Proportional to 37,278, 51,444.72 and 20,511

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Solution

The fourth proportional to 37,278, 51,444.72 and 20,511 is: 28,305.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,278 : 51,444.72 = 20,511 : x
  2. Step 2: Convert to fraction form
    37,278/51,444.72 = 20,511/x
  3. Step 3: Cross multiply
    37,278x = 51,444.72 × 20,511
  4. Step 4: Simplify right side
    37,278x = 1,055,182,651.92
  5. Step 5: Solve for x
    x = 1,055,182,651.92/37,278
  6. Step 6: Final answer
    x = 28,305.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.