Home / 71,580.36-98,778.78-39,315.36

Finding the Fourth Proportional to 71,580.36, 98,778.78 and 39,315.36

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Solution

The fourth proportional to 71,580.36, 98,778.78 and 39,315.36 is: 54,254.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,580.36 : 98,778.78 = 39,315.36 : x
  2. Step 2: Convert to fraction form
    71,580.36/98,778.78 = 39,315.36/x
  3. Step 3: Cross multiply
    71,580.36x = 98,778.78 × 39,315.36
  4. Step 4: Simplify right side
    71,580.36x = 3,883,523,296.06
  5. Step 5: Solve for x
    x = 3,883,523,296.06/71,580.36
  6. Step 6: Final answer
    x = 54,254.03

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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.