Home / 74,173.44-102,358.56-40,639.36

Finding the Fourth Proportional to 74,173.44, 102,358.56 and 40,639.36

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Solution

The fourth proportional to 74,173.44, 102,358.56 and 40,639.36 is: 56,081.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,173.44 : 102,358.56 = 40,639.36 : x
  2. Step 2: Convert to fraction form
    74,173.44/102,358.56 = 40,639.36/x
  3. Step 3: Cross multiply
    74,173.44x = 102,358.56 × 40,639.36
  4. Step 4: Simplify right side
    74,173.44x = 4,159,786,368.92
  5. Step 5: Solve for x
    x = 4,159,786,368.92/74,173.44
  6. Step 6: Final answer
    x = 56,081.89

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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.