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Finding the Fourth Proportional to 85,445.93, 128,187.06 and 29,270.97

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Solution

The fourth proportional to 85,445.93, 128,187.06 and 29,270.97 is: 43,912.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,445.93 : 128,187.06 = 29,270.97 : x
  2. Step 2: Convert to fraction form
    85,445.93/128,187.06 = 29,270.97/x
  3. Step 3: Cross multiply
    85,445.93x = 128,187.06 × 29,270.97
  4. Step 4: Simplify right side
    85,445.93x = 3,752,159,587.65
  5. Step 5: Solve for x
    x = 3,752,159,587.65/85,445.93
  6. Step 6: Final answer
    x = 43,912.68

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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.