Home / 103,640.08-155,436.90-40,461.70

Finding the Fourth Proportional to 103,640.08, 155,436.90 and 40,461.70

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Solution

The fourth proportional to 103,640.08, 155,436.90 and 40,461.70 is: 60,683.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,640.08 : 155,436.90 = 40,461.70 : x
  2. Step 2: Convert to fraction form
    103,640.08/155,436.90 = 40,461.70/x
  3. Step 3: Cross multiply
    103,640.08x = 155,436.90 × 40,461.70
  4. Step 4: Simplify right side
    103,640.08x = 6,289,241,216.73
  5. Step 5: Solve for x
    x = 6,289,241,216.73/103,640.08
  6. Step 6: Final answer
    x = 60,683.48

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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.