Home / 78,629.69-117,962.96-26,039.18

Finding the Fourth Proportional to 78,629.69, 117,962.96 and 26,039.18

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Solution

The fourth proportional to 78,629.69, 117,962.96 and 26,039.18 is: 39,064.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,629.69 : 117,962.96 = 26,039.18 : x
  2. Step 2: Convert to fraction form
    78,629.69/117,962.96 = 26,039.18/x
  3. Step 3: Cross multiply
    78,629.69x = 117,962.96 × 26,039.18
  4. Step 4: Simplify right side
    78,629.69x = 3,071,658,028.76
  5. Step 5: Solve for x
    x = 3,071,658,028.76/78,629.69
  6. Step 6: Final answer
    x = 39,064.86

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1.5x scale

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.