Home / 103,541.13-155,311.90-28,661.49

Finding the Fourth Proportional to 103,541.13, 155,311.90 and 28,661.49

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Solution

The fourth proportional to 103,541.13, 155,311.90 and 28,661.49 is: 42,992.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,541.13 : 155,311.90 = 28,661.49 : x
  2. Step 2: Convert to fraction form
    103,541.13/155,311.90 = 28,661.49/x
  3. Step 3: Cross multiply
    103,541.13x = 155,311.90 × 28,661.49
  4. Step 4: Simplify right side
    103,541.13x = 4,451,470,397.08
  5. Step 5: Solve for x
    x = 4,451,470,397.08/103,541.13
  6. Step 6: Final answer
    x = 42,992.29

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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.