Home / 78,087.16-117,128.58-21,927.70

Finding the Fourth Proportional to 78,087.16, 117,128.58 and 21,927.70

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Solution

The fourth proportional to 78,087.16, 117,128.58 and 21,927.70 is: 32,890.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,087.16 : 117,128.58 = 21,927.70 : x
  2. Step 2: Convert to fraction form
    78,087.16/117,128.58 = 21,927.70/x
  3. Step 3: Cross multiply
    78,087.16x = 117,128.58 × 21,927.70
  4. Step 4: Simplify right side
    78,087.16x = 2,568,360,363.67
  5. Step 5: Solve for x
    x = 2,568,360,363.67/78,087.16
  6. Step 6: Final answer
    x = 32,890.94

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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.