Home / 74,082.56-102,028.79-64,007.78

Finding the Fourth Proportional to 74,082.56, 102,028.79 and 64,007.78

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Solution

The fourth proportional to 74,082.56, 102,028.79 and 64,007.78 is: 88,153.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,082.56 : 102,028.79 = 64,007.78 : x
  2. Step 2: Convert to fraction form
    74,082.56/102,028.79 = 64,007.78/x
  3. Step 3: Cross multiply
    74,082.56x = 102,028.79 × 64,007.78
  4. Step 4: Simplify right side
    74,082.56x = 6,530,636,343.99
  5. Step 5: Solve for x
    x = 6,530,636,343.99/74,082.56
  6. Step 6: Final answer
    x = 88,153.49

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1.5x scale

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.