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Finding the Fourth Proportional to 35,787.34, 49,387.95 and 20,679.50

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Solution

The fourth proportional to 35,787.34, 49,387.95 and 20,679.50 is: 28,538.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,787.34 : 49,387.95 = 20,679.50 : x
  2. Step 2: Convert to fraction form
    35,787.34/49,387.95 = 20,679.50/x
  3. Step 3: Cross multiply
    35,787.34x = 49,387.95 × 20,679.50
  4. Step 4: Simplify right side
    35,787.34x = 1,021,318,112.03
  5. Step 5: Solve for x
    x = 1,021,318,112.03/35,787.34
  6. Step 6: Final answer
    x = 28,538.53

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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.