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Finding the Fourth Proportional to 75,283.79, 103,900.31 and 45,069.09

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Solution

The fourth proportional to 75,283.79, 103,900.31 and 45,069.09 is: 62,200.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,283.79 : 103,900.31 = 45,069.09 : x
  2. Step 2: Convert to fraction form
    75,283.79/103,900.31 = 45,069.09/x
  3. Step 3: Cross multiply
    75,283.79x = 103,900.31 × 45,069.09
  4. Step 4: Simplify right side
    75,283.79x = 4,682,692,197.07
  5. Step 5: Solve for x
    x = 4,682,692,197.07/75,283.79
  6. Step 6: Final answer
    x = 62,200.54

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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.