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Finding the Fourth Proportional to 105,578.96, 145,698.96 and 57,832.44

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Solution

The fourth proportional to 105,578.96, 145,698.96 and 57,832.44 is: 79,808.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,578.96 : 145,698.96 = 57,832.44 : x
  2. Step 2: Convert to fraction form
    105,578.96/145,698.96 = 57,832.44/x
  3. Step 3: Cross multiply
    105,578.96x = 145,698.96 × 57,832.44
  4. Step 4: Simplify right side
    105,578.96x = 8,426,126,362.26
  5. Step 5: Solve for x
    x = 8,426,126,362.26/105,578.96
  6. Step 6: Final answer
    x = 79,808.76

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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.