Home / 67,139.10-92,644.70-38,839.50

Finding the Fourth Proportional to 67,139.10, 92,644.70 and 38,839.50

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Solution

The fourth proportional to 67,139.10, 92,644.70 and 38,839.50 is: 53,594.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,139.10 : 92,644.70 = 38,839.50 : x
  2. Step 2: Convert to fraction form
    67,139.10/92,644.70 = 38,839.50/x
  3. Step 3: Cross multiply
    67,139.10x = 92,644.70 × 38,839.50
  4. Step 4: Simplify right side
    67,139.10x = 3,598,273,631.45
  5. Step 5: Solve for x
    x = 3,598,273,631.45/67,139.10
  6. Step 6: Final answer
    x = 53,594.31

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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.