Home / 77,631.47-107,119.40-43,633.64

Finding the Fourth Proportional to 77,631.47, 107,119.40 and 43,633.64

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Solution

The fourth proportional to 77,631.47, 107,119.40 and 43,633.64 is: 60,207.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,631.47 : 107,119.40 = 43,633.64 : x
  2. Step 2: Convert to fraction form
    77,631.47/107,119.40 = 43,633.64/x
  3. Step 3: Cross multiply
    77,631.47x = 107,119.40 × 43,633.64
  4. Step 4: Simplify right side
    77,631.47x = 4,674,008,910.10
  5. Step 5: Solve for x
    x = 4,674,008,910.10/77,631.47
  6. Step 6: Final answer
    x = 60,207.66

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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.