Home / 60,742.90-91,142.03-31,181.51

Finding the Fourth Proportional to 60,742.90, 91,142.03 and 31,181.51

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Solution

The fourth proportional to 60,742.90, 91,142.03 and 31,181.51 is: 46,786.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,742.90 : 91,142.03 = 31,181.51 : x
  2. Step 2: Convert to fraction form
    60,742.90/91,142.03 = 31,181.51/x
  3. Step 3: Cross multiply
    60,742.90x = 91,142.03 × 31,181.51
  4. Step 4: Simplify right side
    60,742.90x = 2,841,945,913.00
  5. Step 5: Solve for x
    x = 2,841,945,913.00/60,742.90
  6. Step 6: Final answer
    x = 46,786.47

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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.