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Finding the Fourth Proportional to 52,706.28, 72,692.80 and 39,828.56

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Solution

The fourth proportional to 52,706.28, 72,692.80 and 39,828.56 is: 54,931.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,706.28 : 72,692.80 = 39,828.56 : x
  2. Step 2: Convert to fraction form
    52,706.28/72,692.80 = 39,828.56/x
  3. Step 3: Cross multiply
    52,706.28x = 72,692.80 × 39,828.56
  4. Step 4: Simplify right side
    52,706.28x = 2,895,249,546.37
  5. Step 5: Solve for x
    x = 2,895,249,546.37/52,706.28
  6. Step 6: Final answer
    x = 54,931.78

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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.