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Finding the Fourth Proportional to 28,703.40, 43,055.10 and 27,342.60

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Solution

The fourth proportional to 28,703.40, 43,055.10 and 27,342.60 is: 41,013.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,703.40 : 43,055.10 = 27,342.60 : x
  2. Step 2: Convert to fraction form
    28,703.40/43,055.10 = 27,342.60/x
  3. Step 3: Cross multiply
    28,703.40x = 43,055.10 × 27,342.60
  4. Step 4: Simplify right side
    28,703.40x = 1,177,238,377.26
  5. Step 5: Solve for x
    x = 1,177,238,377.26/28,703.40
  6. Step 6: Final answer
    x = 41,013.90

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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.