Home / 77,305.12-106,678.08-43,771.20

Finding the Fourth Proportional to 77,305.12, 106,678.08 and 43,771.20

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Solution

The fourth proportional to 77,305.12, 106,678.08 and 43,771.20 is: 60,402.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,305.12 : 106,678.08 = 43,771.20 : x
  2. Step 2: Convert to fraction form
    77,305.12/106,678.08 = 43,771.20/x
  3. Step 3: Cross multiply
    77,305.12x = 106,678.08 × 43,771.20
  4. Step 4: Simplify right side
    77,305.12x = 4,669,427,575.30
  5. Step 5: Solve for x
    x = 4,669,427,575.30/77,305.12
  6. Step 6: Final answer
    x = 60,402.57

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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.