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Finding the Fourth Proportional to 51,409.62, 70,941.48 and 28,438.44

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Solution

The fourth proportional to 51,409.62, 70,941.48 and 28,438.44 is: 39,242.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,409.62 : 70,941.48 = 28,438.44 : x
  2. Step 2: Convert to fraction form
    51,409.62/70,941.48 = 28,438.44/x
  3. Step 3: Cross multiply
    51,409.62x = 70,941.48 × 28,438.44
  4. Step 4: Simplify right side
    51,409.62x = 2,017,465,022.49
  5. Step 5: Solve for x
    x = 2,017,465,022.49/51,409.62
  6. Step 6: Final answer
    x = 39,242.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.