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Finding the Fourth Proportional to 73,321.56, 109,428.57 and 66,235.68

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Solution

The fourth proportional to 73,321.56, 109,428.57 and 66,235.68 is: 98,853.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,321.56 : 109,428.57 = 66,235.68 : x
  2. Step 2: Convert to fraction form
    73,321.56/109,428.57 = 66,235.68/x
  3. Step 3: Cross multiply
    73,321.56x = 109,428.57 × 66,235.68
  4. Step 4: Simplify right side
    73,321.56x = 7,248,075,745.38
  5. Step 5: Solve for x
    x = 7,248,075,745.38/73,321.56
  6. Step 6: Final answer
    x = 98,853.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.