Home / 74,423.33-102,703.78-40,431.54

Finding the Fourth Proportional to 74,423.33, 102,703.78 and 40,431.54

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Solution

The fourth proportional to 74,423.33, 102,703.78 and 40,431.54 is: 55,795.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,423.33 : 102,703.78 = 40,431.54 : x
  2. Step 2: Convert to fraction form
    74,423.33/102,703.78 = 40,431.54/x
  3. Step 3: Cross multiply
    74,423.33x = 102,703.78 × 40,431.54
  4. Step 4: Simplify right side
    74,423.33x = 4,152,471,888.14
  5. Step 5: Solve for x
    x = 4,152,471,888.14/74,423.33
  6. Step 6: Final answer
    x = 55,795.30

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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.