Home / 74,570.76-102,905.58-40,578.46

Finding the Fourth Proportional to 74,570.76, 102,905.58 and 40,578.46

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Solution

The fourth proportional to 74,570.76, 102,905.58 and 40,578.46 is: 55,997.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,570.76 : 102,905.58 = 40,578.46 : x
  2. Step 2: Convert to fraction form
    74,570.76/102,905.58 = 40,578.46/x
  3. Step 3: Cross multiply
    74,570.76x = 102,905.58 × 40,578.46
  4. Step 4: Simplify right side
    74,570.76x = 4,175,749,961.81
  5. Step 5: Solve for x
    x = 4,175,749,961.81/74,570.76
  6. Step 6: Final answer
    x = 55,997.15

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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.