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Finding the Fourth Proportional to 50,450.80, 75,643.80 and 20,880.40

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Solution

The fourth proportional to 50,450.80, 75,643.80 and 20,880.40 is: 31,307.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,450.80 : 75,643.80 = 20,880.40 : x
  2. Step 2: Convert to fraction form
    50,450.80/75,643.80 = 20,880.40/x
  3. Step 3: Cross multiply
    50,450.80x = 75,643.80 × 20,880.40
  4. Step 4: Simplify right side
    50,450.80x = 1,579,472,801.52
  5. Step 5: Solve for x
    x = 1,579,472,801.52/50,450.80
  6. Step 6: Final answer
    x = 31,307.19

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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.