Home / 69,135.06-103,702.40-45,756.12

Finding the Fourth Proportional to 69,135.06, 103,702.40 and 45,756.12

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Solution

The fourth proportional to 69,135.06, 103,702.40 and 45,756.12 is: 68,634.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,135.06 : 103,702.40 = 45,756.12 : x
  2. Step 2: Convert to fraction form
    69,135.06/103,702.40 = 45,756.12/x
  3. Step 3: Cross multiply
    69,135.06x = 103,702.40 × 45,756.12
  4. Step 4: Simplify right side
    69,135.06x = 4,745,019,458.69
  5. Step 5: Solve for x
    x = 4,745,019,458.69/69,135.06
  6. Step 6: Final answer
    x = 68,634.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.