Home / 78,027.72-117,048.33-21,868.80

Finding the Fourth Proportional to 78,027.72, 117,048.33 and 21,868.80

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Solution

The fourth proportional to 78,027.72, 117,048.33 and 21,868.80 is: 32,805.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,027.72 : 117,048.33 = 21,868.80 : x
  2. Step 2: Convert to fraction form
    78,027.72/117,048.33 = 21,868.80/x
  3. Step 3: Cross multiply
    78,027.72x = 117,048.33 × 21,868.80
  4. Step 4: Simplify right side
    78,027.72x = 2,559,706,519.10
  5. Step 5: Solve for x
    x = 2,559,706,519.10/78,027.72
  6. Step 6: Final answer
    x = 32,805.09

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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.