Home / 79,318.74-118,918.94-47,721.40

Finding the Fourth Proportional to 79,318.74, 118,918.94 and 47,721.40

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Solution

The fourth proportional to 79,318.74, 118,918.94 and 47,721.40 is: 71,546.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,318.74 : 118,918.94 = 47,721.40 : x
  2. Step 2: Convert to fraction form
    79,318.74/118,918.94 = 47,721.40/x
  3. Step 3: Cross multiply
    79,318.74x = 118,918.94 × 47,721.40
  4. Step 4: Simplify right side
    79,318.74x = 5,674,978,258.82
  5. Step 5: Solve for x
    x = 5,674,978,258.82/79,318.74
  6. Step 6: Final answer
    x = 71,546.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.