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Finding the Fourth Proportional to 91,835, 137,775.62 and 26,171

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Solution

The fourth proportional to 91,835, 137,775.62 and 26,171 is: 39,263.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,835 : 137,775.62 = 26,171 : x
  2. Step 2: Convert to fraction form
    91,835/137,775.62 = 26,171/x
  3. Step 3: Cross multiply
    91,835x = 137,775.62 × 26,171
  4. Step 4: Simplify right side
    91,835x = 3,605,725,751.02
  5. Step 5: Solve for x
    x = 3,605,725,751.02/91,835
  6. Step 6: Final answer
    x = 39,263.09

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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.