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Finding the Fourth Proportional to 74,907.88, 103,274.42 and 57,699.64

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Solution

The fourth proportional to 74,907.88, 103,274.42 and 57,699.64 is: 79,549.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,907.88 : 103,274.42 = 57,699.64 : x
  2. Step 2: Convert to fraction form
    74,907.88/103,274.42 = 57,699.64/x
  3. Step 3: Cross multiply
    74,907.88x = 103,274.42 × 57,699.64
  4. Step 4: Simplify right side
    74,907.88x = 5,958,896,855.21
  5. Step 5: Solve for x
    x = 5,958,896,855.21/74,907.88
  6. Step 6: Final answer
    x = 79,549.67

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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.