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Finding the Fourth Proportional to 91,676.25, 137,535.90 and 28,493.13

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Solution

The fourth proportional to 91,676.25, 137,535.90 and 28,493.13 is: 42,746.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,676.25 : 137,535.90 = 28,493.13 : x
  2. Step 2: Convert to fraction form
    91,676.25/137,535.90 = 28,493.13/x
  3. Step 3: Cross multiply
    91,676.25x = 137,535.90 × 28,493.13
  4. Step 4: Simplify right side
    91,676.25x = 3,918,828,278.37
  5. Step 5: Solve for x
    x = 3,918,828,278.37/91,676.25
  6. Step 6: Final answer
    x = 42,746.39

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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.