Home / 71,018.51-98,005.43-39,187.38

Finding the Fourth Proportional to 71,018.51, 98,005.43 and 39,187.38

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Solution

The fourth proportional to 71,018.51, 98,005.43 and 39,187.38 is: 54,078.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,018.51 : 98,005.43 = 39,187.38 : x
  2. Step 2: Convert to fraction form
    71,018.51/98,005.43 = 39,187.38/x
  3. Step 3: Cross multiply
    71,018.51x = 98,005.43 × 39,187.38
  4. Step 4: Simplify right side
    71,018.51x = 3,840,576,027.47
  5. Step 5: Solve for x
    x = 3,840,576,027.47/71,018.51
  6. Step 6: Final answer
    x = 54,078.52

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1.5x scale

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.