Home / 78,558.12-108,408.44-42,748.22

Finding the Fourth Proportional to 78,558.12, 108,408.44 and 42,748.22

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Solution

The fourth proportional to 78,558.12, 108,408.44 and 42,748.22 is: 58,991.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,558.12 : 108,408.44 = 42,748.22 : x
  2. Step 2: Convert to fraction form
    78,558.12/108,408.44 = 42,748.22/x
  3. Step 3: Cross multiply
    78,558.12x = 108,408.44 × 42,748.22
  4. Step 4: Simplify right side
    78,558.12x = 4,634,267,842.98
  5. Step 5: Solve for x
    x = 4,634,267,842.98/78,558.12
  6. Step 6: Final answer
    x = 58,991.58

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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.