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Finding the Fourth Proportional to 90,408.59, 124,766.82 and 50,126.11

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Solution

The fourth proportional to 90,408.59, 124,766.82 and 50,126.11 is: 69,175.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,408.59 : 124,766.82 = 50,126.11 : x
  2. Step 2: Convert to fraction form
    90,408.59/124,766.82 = 50,126.11/x
  3. Step 3: Cross multiply
    90,408.59x = 124,766.82 × 50,126.11
  4. Step 4: Simplify right side
    90,408.59x = 6,254,075,031.75
  5. Step 5: Solve for x
    x = 6,254,075,031.75/90,408.59
  6. Step 6: Final answer
    x = 69,175.67

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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.