Home / 45,243.28-67,862.15-20,276.63

Finding the Fourth Proportional to 45,243.28, 67,862.15 and 20,276.63

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Solution

The fourth proportional to 45,243.28, 67,862.15 and 20,276.63 is: 30,413.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,243.28 : 67,862.15 = 20,276.63 : x
  2. Step 2: Convert to fraction form
    45,243.28/67,862.15 = 20,276.63/x
  3. Step 3: Cross multiply
    45,243.28x = 67,862.15 × 20,276.63
  4. Step 4: Simplify right side
    45,243.28x = 1,376,015,710.44
  5. Step 5: Solve for x
    x = 1,376,015,710.44/45,243.28
  6. Step 6: Final answer
    x = 30,413.70

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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.