Home / 105,745.76-145,929.24-57,999.44

Finding the Fourth Proportional to 105,745.76, 145,929.24 and 57,999.44

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Solution

The fourth proportional to 105,745.76, 145,929.24 and 57,999.44 is: 80,039.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,745.76 : 145,929.24 = 57,999.44 : x
  2. Step 2: Convert to fraction form
    105,745.76/145,929.24 = 57,999.44/x
  3. Step 3: Cross multiply
    105,745.76x = 145,929.24 × 57,999.44
  4. Step 4: Simplify right side
    105,745.76x = 8,463,814,199.63
  5. Step 5: Solve for x
    x = 8,463,814,199.63/105,745.76
  6. Step 6: Final answer
    x = 80,039.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.