Home / 74,918.79-103,383.36-40,920.39

Finding the Fourth Proportional to 74,918.79, 103,383.36 and 40,920.39

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Solution

The fourth proportional to 74,918.79, 103,383.36 and 40,920.39 is: 56,467.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,918.79 : 103,383.36 = 40,920.39 : x
  2. Step 2: Convert to fraction form
    74,918.79/103,383.36 = 40,920.39/x
  3. Step 3: Cross multiply
    74,918.79x = 103,383.36 × 40,920.39
  4. Step 4: Simplify right side
    74,918.79x = 4,230,487,410.71
  5. Step 5: Solve for x
    x = 4,230,487,410.71/74,918.79
  6. Step 6: Final answer
    x = 56,467.64

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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.