Home / 76,608.05-114,865.16-31,615.45

Finding the Fourth Proportional to 76,608.05, 114,865.16 and 31,615.45

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Solution

The fourth proportional to 76,608.05, 114,865.16 and 31,615.45 is: 47,403.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,608.05 : 114,865.16 = 31,615.45 : x
  2. Step 2: Convert to fraction form
    76,608.05/114,865.16 = 31,615.45/x
  3. Step 3: Cross multiply
    76,608.05x = 114,865.16 × 31,615.45
  4. Step 4: Simplify right side
    76,608.05x = 3,631,513,277.48
  5. Step 5: Solve for x
    x = 3,631,513,277.48/76,608.05
  6. Step 6: Final answer
    x = 47,403.81

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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.