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Finding the Fourth Proportional to 44,345.88, 66,465.93 and 20,621.40

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Solution

The fourth proportional to 44,345.88, 66,465.93 and 20,621.40 is: 30,907.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,345.88 : 66,465.93 = 20,621.40 : x
  2. Step 2: Convert to fraction form
    44,345.88/66,465.93 = 20,621.40/x
  3. Step 3: Cross multiply
    44,345.88x = 66,465.93 × 20,621.40
  4. Step 4: Simplify right side
    44,345.88x = 1,370,620,528.90
  5. Step 5: Solve for x
    x = 1,370,620,528.90/44,345.88
  6. Step 6: Final answer
    x = 30,907.51

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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.