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Finding the Fourth Proportional to 45,612.68, 68,406.06 and 28,947.56

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Solution

The fourth proportional to 45,612.68, 68,406.06 and 28,947.56 is: 43,413.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,612.68 : 68,406.06 = 28,947.56 : x
  2. Step 2: Convert to fraction form
    45,612.68/68,406.06 = 28,947.56/x
  3. Step 3: Cross multiply
    45,612.68x = 68,406.06 × 28,947.56
  4. Step 4: Simplify right side
    45,612.68x = 1,980,188,526.21
  5. Step 5: Solve for x
    x = 1,980,188,526.21/45,612.68
  6. Step 6: Final answer
    x = 43,413.12

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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.