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Finding the Fourth Proportional to 73,069.68, 100,836 and 39,535.68

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Solution

The fourth proportional to 73,069.68, 100,836 and 39,535.68 is: 54,559.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,069.68 : 100,836 = 39,535.68 : x
  2. Step 2: Convert to fraction form
    73,069.68/100,836 = 39,535.68/x
  3. Step 3: Cross multiply
    73,069.68x = 100,836 × 39,535.68
  4. Step 4: Simplify right side
    73,069.68x = 3,986,619,828.48
  5. Step 5: Solve for x
    x = 3,986,619,828.48/73,069.68
  6. Step 6: Final answer
    x = 54,559.15

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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.