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Finding the Fourth Proportional to 68,063.55, 93,913.93 and 39,763.77

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Solution

The fourth proportional to 68,063.55, 93,913.93 and 39,763.77 is: 54,865.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,063.55 : 93,913.93 = 39,763.77 : x
  2. Step 2: Convert to fraction form
    68,063.55/93,913.93 = 39,763.77/x
  3. Step 3: Cross multiply
    68,063.55x = 93,913.93 × 39,763.77
  4. Step 4: Simplify right side
    68,063.55x = 3,734,371,912.32
  5. Step 5: Solve for x
    x = 3,734,371,912.32/68,063.55
  6. Step 6: Final answer
    x = 54,865.96

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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.