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Finding the Fourth Proportional to 30,807.70, 46,211.55 and 28,863.70

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Solution

The fourth proportional to 30,807.70, 46,211.55 and 28,863.70 is: 43,295.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,807.70 : 46,211.55 = 28,863.70 : x
  2. Step 2: Convert to fraction form
    30,807.70/46,211.55 = 28,863.70/x
  3. Step 3: Cross multiply
    30,807.70x = 46,211.55 × 28,863.70
  4. Step 4: Simplify right side
    30,807.70x = 1,333,836,315.74
  5. Step 5: Solve for x
    x = 1,333,836,315.74/30,807.70
  6. Step 6: Final answer
    x = 43,295.55

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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.