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Finding the Fourth Proportional to 85,446.93, 128,188.56 and 29,271.97

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Solution

The fourth proportional to 85,446.93, 128,188.56 and 29,271.97 is: 43,914.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,446.93 : 128,188.56 = 29,271.97 : x
  2. Step 2: Convert to fraction form
    85,446.93/128,188.56 = 29,271.97/x
  3. Step 3: Cross multiply
    85,446.93x = 128,188.56 × 29,271.97
  4. Step 4: Simplify right side
    85,446.93x = 3,752,331,682.66
  5. Step 5: Solve for x
    x = 3,752,331,682.66/85,446.93
  6. Step 6: Final answer
    x = 43,914.18

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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.