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Finding the Fourth Proportional to 48,682.60, 72,671.74 and 42,777.70

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Solution

The fourth proportional to 48,682.60, 72,671.74 and 42,777.70 is: 63,857.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,682.60 : 72,671.74 = 42,777.70 : x
  2. Step 2: Convert to fraction form
    48,682.60/72,671.74 = 42,777.70/x
  3. Step 3: Cross multiply
    48,682.60x = 72,671.74 × 42,777.70
  4. Step 4: Simplify right side
    48,682.60x = 3,108,729,892.20
  5. Step 5: Solve for x
    x = 3,108,729,892.20/48,682.60
  6. Step 6: Final answer
    x = 63,857.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.