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Finding the Fourth Proportional to 67,728.74, 93,460.57 and 39,028.01

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Solution

The fourth proportional to 67,728.74, 93,460.57 and 39,028.01 is: 53,855.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,728.74 : 93,460.57 = 39,028.01 : x
  2. Step 2: Convert to fraction form
    67,728.74/93,460.57 = 39,028.01/x
  3. Step 3: Cross multiply
    67,728.74x = 93,460.57 × 39,028.01
  4. Step 4: Simplify right side
    67,728.74x = 3,647,579,495.69
  5. Step 5: Solve for x
    x = 3,647,579,495.69/67,728.74
  6. Step 6: Final answer
    x = 53,855.72

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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.