Home / 78,668.64-117,977.45-26,064

Finding the Fourth Proportional to 78,668.64, 117,977.45 and 26,064

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Solution

The fourth proportional to 78,668.64, 117,977.45 and 26,064 is: 39,087.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,668.64 : 117,977.45 = 26,064 : x
  2. Step 2: Convert to fraction form
    78,668.64/117,977.45 = 26,064/x
  3. Step 3: Cross multiply
    78,668.64x = 117,977.45 × 26,064
  4. Step 4: Simplify right side
    78,668.64x = 3,074,964,126.48
  5. Step 5: Solve for x
    x = 3,074,964,126.48/78,668.64
  6. Step 6: Final answer
    x = 39,087.55

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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.