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Finding the Fourth Proportional to 67,692.87, 93,440.69 and 39,398.56

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Solution

The fourth proportional to 67,692.87, 93,440.69 and 39,398.56 is: 54,384.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,692.87 : 93,440.69 = 39,398.56 : x
  2. Step 2: Convert to fraction form
    67,692.87/93,440.69 = 39,398.56/x
  3. Step 3: Cross multiply
    67,692.87x = 93,440.69 × 39,398.56
  4. Step 4: Simplify right side
    67,692.87x = 3,681,428,631.41
  5. Step 5: Solve for x
    x = 3,681,428,631.41/67,692.87
  6. Step 6: Final answer
    x = 54,384.29

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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.