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Finding the Fourth Proportional to 84,010.42, 115,826.77 and 68,847.22

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Solution

The fourth proportional to 84,010.42, 115,826.77 and 68,847.22 is: 94,920.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,010.42 : 115,826.77 = 68,847.22 : x
  2. Step 2: Convert to fraction form
    84,010.42/115,826.77 = 68,847.22/x
  3. Step 3: Cross multiply
    84,010.42x = 115,826.77 × 68,847.22
  4. Step 4: Simplify right side
    84,010.42x = 7,974,351,116.08
  5. Step 5: Solve for x
    x = 7,974,351,116.08/84,010.42
  6. Step 6: Final answer
    x = 94,920.98

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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.