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Finding the Fourth Proportional to 74,919.42, 103,364.81 and 53,412.67

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Solution

The fourth proportional to 74,919.42, 103,364.81 and 53,412.67 is: 73,692.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,919.42 : 103,364.81 = 53,412.67 : x
  2. Step 2: Convert to fraction form
    74,919.42/103,364.81 = 53,412.67/x
  3. Step 3: Cross multiply
    74,919.42x = 103,364.81 × 53,412.67
  4. Step 4: Simplify right side
    74,919.42x = 5,520,990,486.14
  5. Step 5: Solve for x
    x = 5,520,990,486.14/74,919.42
  6. Step 6: Final answer
    x = 73,692.38

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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.