Home / 74,982.81-112,418.19-45,393.51

Finding the Fourth Proportional to 74,982.81, 112,418.19 and 45,393.51

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Solution

The fourth proportional to 74,982.81, 112,418.19 and 45,393.51 is: 68,056.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,982.81 : 112,418.19 = 45,393.51 : x
  2. Step 2: Convert to fraction form
    74,982.81/112,418.19 = 45,393.51/x
  3. Step 3: Cross multiply
    74,982.81x = 112,418.19 × 45,393.51
  4. Step 4: Simplify right side
    74,982.81x = 5,103,056,231.95
  5. Step 5: Solve for x
    x = 5,103,056,231.95/74,982.81
  6. Step 6: Final answer
    x = 68,056.35

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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.