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Finding the Fourth Proportional to 91,175.60, 136,749.72 and 28,838

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Solution

The fourth proportional to 91,175.60, 136,749.72 and 28,838 is: 43,252.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,175.60 : 136,749.72 = 28,838 : x
  2. Step 2: Convert to fraction form
    91,175.60/136,749.72 = 28,838/x
  3. Step 3: Cross multiply
    91,175.60x = 136,749.72 × 28,838
  4. Step 4: Simplify right side
    91,175.60x = 3,943,588,425.36
  5. Step 5: Solve for x
    x = 3,943,588,425.36/91,175.60
  6. Step 6: Final answer
    x = 43,252.67

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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.