Home / 103,623.54-155,428.25-40,431.98

Finding the Fourth Proportional to 103,623.54, 155,428.25 and 40,431.98

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Solution

The fourth proportional to 103,623.54, 155,428.25 and 40,431.98 is: 60,645.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,623.54 : 155,428.25 = 40,431.98 : x
  2. Step 2: Convert to fraction form
    103,623.54/155,428.25 = 40,431.98/x
  3. Step 3: Cross multiply
    103,623.54x = 155,428.25 × 40,431.98
  4. Step 4: Simplify right side
    103,623.54x = 6,284,270,916.13
  5. Step 5: Solve for x
    x = 6,284,270,916.13/103,623.54
  6. Step 6: Final answer
    x = 60,645.21

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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.