Home / 79,437.31-109,624.79-43,138.85

Finding the Fourth Proportional to 79,437.31, 109,624.79 and 43,138.85

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Solution

The fourth proportional to 79,437.31, 109,624.79 and 43,138.85 is: 59,532.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,437.31 : 109,624.79 = 43,138.85 : x
  2. Step 2: Convert to fraction form
    79,437.31/109,624.79 = 43,138.85/x
  3. Step 3: Cross multiply
    79,437.31x = 109,624.79 × 43,138.85
  4. Step 4: Simplify right side
    79,437.31x = 4,729,086,931.81
  5. Step 5: Solve for x
    x = 4,729,086,931.81/79,437.31
  6. Step 6: Final answer
    x = 59,532.32

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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.