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Finding the Fourth Proportional to 56,137.76, 77,469.82 and 30,644.12

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Solution

The fourth proportional to 56,137.76, 77,469.82 and 30,644.12 is: 42,288.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,137.76 : 77,469.82 = 30,644.12 : x
  2. Step 2: Convert to fraction form
    56,137.76/77,469.82 = 30,644.12/x
  3. Step 3: Cross multiply
    56,137.76x = 77,469.82 × 30,644.12
  4. Step 4: Simplify right side
    56,137.76x = 2,373,994,577.52
  5. Step 5: Solve for x
    x = 2,373,994,577.52/56,137.76
  6. Step 6: Final answer
    x = 42,288.73

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1.5x scale

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.