Home / 103,629.78-155,444.70-28,768.77

Finding the Fourth Proportional to 103,629.78, 155,444.70 and 28,768.77

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Solution

The fourth proportional to 103,629.78, 155,444.70 and 28,768.77 is: 43,153.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,629.78 : 155,444.70 = 28,768.77 : x
  2. Step 2: Convert to fraction form
    103,629.78/155,444.70 = 28,768.77/x
  3. Step 3: Cross multiply
    103,629.78x = 155,444.70 × 28,768.77
  4. Step 4: Simplify right side
    103,629.78x = 4,471,952,822.02
  5. Step 5: Solve for x
    x = 4,471,952,822.02/103,629.78
  6. Step 6: Final answer
    x = 43,153.16

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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.