Home / 71,579.09-98,782.44-39,748.12

Finding the Fourth Proportional to 71,579.09, 98,782.44 and 39,748.12

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Solution

The fourth proportional to 71,579.09, 98,782.44 and 39,748.12 is: 54,854.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,579.09 : 98,782.44 = 39,748.12 : x
  2. Step 2: Convert to fraction form
    71,579.09/98,782.44 = 39,748.12/x
  3. Step 3: Cross multiply
    71,579.09x = 98,782.44 × 39,748.12
  4. Step 4: Simplify right side
    71,579.09x = 3,926,415,883.00
  5. Step 5: Solve for x
    x = 3,926,415,883.00/71,579.09
  6. Step 6: Final answer
    x = 54,854.23

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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.