Home / 74,639.94-103,003.20-40,648.48

Finding the Fourth Proportional to 74,639.94, 103,003.20 and 40,648.48

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Solution

The fourth proportional to 74,639.94, 103,003.20 and 40,648.48 is: 56,094.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,639.94 : 103,003.20 = 40,648.48 : x
  2. Step 2: Convert to fraction form
    74,639.94/103,003.20 = 40,648.48/x
  3. Step 3: Cross multiply
    74,639.94x = 103,003.20 × 40,648.48
  4. Step 4: Simplify right side
    74,639.94x = 4,186,923,515.14
  5. Step 5: Solve for x
    x = 4,186,923,515.14/74,639.94
  6. Step 6: Final answer
    x = 56,094.95

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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.