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Finding the Fourth Proportional to 35,685.80, 49,246.80 and 19,770.50

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Solution

The fourth proportional to 35,685.80, 49,246.80 and 19,770.50 is: 27,283.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,685.80 : 49,246.80 = 19,770.50 : x
  2. Step 2: Convert to fraction form
    35,685.80/49,246.80 = 19,770.50/x
  3. Step 3: Cross multiply
    35,685.80x = 49,246.80 × 19,770.50
  4. Step 4: Simplify right side
    35,685.80x = 973,633,859.40
  5. Step 5: Solve for x
    x = 973,633,859.40/35,685.80
  6. Step 6: Final answer
    x = 27,283.51

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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.