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Finding the Fourth Proportional to 73,124.88, 109,671.44 and 42,709.66

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Solution

The fourth proportional to 73,124.88, 109,671.44 and 42,709.66 is: 64,055.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,124.88 : 109,671.44 = 42,709.66 : x
  2. Step 2: Convert to fraction form
    73,124.88/109,671.44 = 42,709.66/x
  3. Step 3: Cross multiply
    73,124.88x = 109,671.44 × 42,709.66
  4. Step 4: Simplify right side
    73,124.88x = 4,684,029,914.11
  5. Step 5: Solve for x
    x = 4,684,029,914.11/73,124.88
  6. Step 6: Final answer
    x = 64,055.22

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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.