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Finding the Fourth Proportional to 71,054.15, 98,054.85 and 39,223.07

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Solution

The fourth proportional to 71,054.15, 98,054.85 and 39,223.07 is: 54,127.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,054.15 : 98,054.85 = 39,223.07 : x
  2. Step 2: Convert to fraction form
    71,054.15/98,054.85 = 39,223.07/x
  3. Step 3: Cross multiply
    71,054.15x = 98,054.85 × 39,223.07
  4. Step 4: Simplify right side
    71,054.15x = 3,846,011,755.12
  5. Step 5: Solve for x
    x = 3,846,011,755.12/71,054.15
  6. Step 6: Final answer
    x = 54,127.90

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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.