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Finding the Fourth Proportional to 76,885.52, 106,099.61 and 45,075.60

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Solution

The fourth proportional to 76,885.52, 106,099.61 and 45,075.60 is: 62,202.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,885.52 : 106,099.61 = 45,075.60 : x
  2. Step 2: Convert to fraction form
    76,885.52/106,099.61 = 45,075.60/x
  3. Step 3: Cross multiply
    76,885.52x = 106,099.61 × 45,075.60
  4. Step 4: Simplify right side
    76,885.52x = 4,782,503,355.14
  5. Step 5: Solve for x
    x = 4,782,503,355.14/76,885.52
  6. Step 6: Final answer
    x = 62,202.92

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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.