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Finding the Fourth Proportional to 71,054.78, 98,055.58 and 39,223.68

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Solution

The fourth proportional to 71,054.78, 98,055.58 and 39,223.68 is: 54,128.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,054.78 : 98,055.58 = 39,223.68 : x
  2. Step 2: Convert to fraction form
    71,054.78/98,055.58 = 39,223.68/x
  3. Step 3: Cross multiply
    71,054.78x = 98,055.58 × 39,223.68
  4. Step 4: Simplify right side
    71,054.78x = 3,846,100,692.13
  5. Step 5: Solve for x
    x = 3,846,100,692.13/71,054.78
  6. Step 6: Final answer
    x = 54,128.67

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1.5x scale

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.