Home / 72,836.31-100,512.53-40,570.81

Finding the Fourth Proportional to 72,836.31, 100,512.53 and 40,570.81

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Solution

The fourth proportional to 72,836.31, 100,512.53 and 40,570.81 is: 55,986.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,836.31 : 100,512.53 = 40,570.81 : x
  2. Step 2: Convert to fraction form
    72,836.31/100,512.53 = 40,570.81/x
  3. Step 3: Cross multiply
    72,836.31x = 100,512.53 × 40,570.81
  4. Step 4: Simplify right side
    72,836.31x = 4,077,874,455.25
  5. Step 5: Solve for x
    x = 4,077,874,455.25/72,836.31
  6. Step 6: Final answer
    x = 55,986.83

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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.