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Finding the Fourth Proportional to 68,089.36, 93,956.72 and 39,403.32

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Solution

The fourth proportional to 68,089.36, 93,956.72 and 39,403.32 is: 54,372.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,089.36 : 93,956.72 = 39,403.32 : x
  2. Step 2: Convert to fraction form
    68,089.36/93,956.72 = 39,403.32/x
  3. Step 3: Cross multiply
    68,089.36x = 93,956.72 × 39,403.32
  4. Step 4: Simplify right side
    68,089.36x = 3,702,206,704.31
  5. Step 5: Solve for x
    x = 3,702,206,704.31/68,089.36
  6. Step 6: Final answer
    x = 54,372.76

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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.