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Finding the Fourth Proportional to 90,676.29, 136,030.86 and 29,889.81

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Solution

The fourth proportional to 90,676.29, 136,030.86 and 29,889.81 is: 44,840.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,676.29 : 136,030.86 = 29,889.81 : x
  2. Step 2: Convert to fraction form
    90,676.29/136,030.86 = 29,889.81/x
  3. Step 3: Cross multiply
    90,676.29x = 136,030.86 × 29,889.81
  4. Step 4: Simplify right side
    90,676.29x = 4,065,936,559.54
  5. Step 5: Solve for x
    x = 4,065,936,559.54/90,676.29
  6. Step 6: Final answer
    x = 44,840.13

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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.