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Finding the Fourth Proportional to 85,449.84, 117,754.22 and 61,531.36

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Solution

The fourth proportional to 85,449.84, 117,754.22 and 61,531.36 is: 84,793.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,449.84 : 117,754.22 = 61,531.36 : x
  2. Step 2: Convert to fraction form
    85,449.84/117,754.22 = 61,531.36/x
  3. Step 3: Cross multiply
    85,449.84x = 117,754.22 × 61,531.36
  4. Step 4: Simplify right side
    85,449.84x = 7,245,577,302.34
  5. Step 5: Solve for x
    x = 7,245,577,302.34/85,449.84
  6. Step 6: Final answer
    x = 84,793.34

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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.