Home / 78,219.04-107,941.92-42,408.94

Finding the Fourth Proportional to 78,219.04, 107,941.92 and 42,408.94

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Solution

The fourth proportional to 78,219.04, 107,941.92 and 42,408.94 is: 58,524.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,219.04 : 107,941.92 = 42,408.94 : x
  2. Step 2: Convert to fraction form
    78,219.04/107,941.92 = 42,408.94/x
  3. Step 3: Cross multiply
    78,219.04x = 107,941.92 × 42,408.94
  4. Step 4: Simplify right side
    78,219.04x = 4,577,702,408.76
  5. Step 5: Solve for x
    x = 4,577,702,408.76/78,219.04
  6. Step 6: Final answer
    x = 58,524.14

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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.