Home / 85,818.11-118,386.89-74,471.67

Finding the Fourth Proportional to 85,818.11, 118,386.89 and 74,471.67

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Solution

The fourth proportional to 85,818.11, 118,386.89 and 74,471.67 is: 102,734.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,818.11 : 118,386.89 = 74,471.67 : x
  2. Step 2: Convert to fraction form
    85,818.11/118,386.89 = 74,471.67/x
  3. Step 3: Cross multiply
    85,818.11x = 118,386.89 × 74,471.67
  4. Step 4: Simplify right side
    85,818.11x = 8,816,469,032.05
  5. Step 5: Solve for x
    x = 8,816,469,032.05/85,818.11
  6. Step 6: Final answer
    x = 102,734.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.