Home / 103,623.38-155,435.10-28,762.40

Finding the Fourth Proportional to 103,623.38, 155,435.10 and 28,762.40

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Solution

The fourth proportional to 103,623.38, 155,435.10 and 28,762.40 is: 43,143.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,623.38 : 155,435.10 = 28,762.40 : x
  2. Step 2: Convert to fraction form
    103,623.38/155,435.10 = 28,762.40/x
  3. Step 3: Cross multiply
    103,623.38x = 155,435.10 × 28,762.40
  4. Step 4: Simplify right side
    103,623.38x = 4,470,686,520.24
  5. Step 5: Solve for x
    x = 4,470,686,520.24/103,623.38
  6. Step 6: Final answer
    x = 43,143.61

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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.