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Finding the Fourth Proportional to 30,830.70, 46,246.05 and 28,643.70

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Solution

The fourth proportional to 30,830.70, 46,246.05 and 28,643.70 is: 42,965.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,830.70 : 46,246.05 = 28,643.70 : x
  2. Step 2: Convert to fraction form
    30,830.70/46,246.05 = 28,643.70/x
  3. Step 3: Cross multiply
    30,830.70x = 46,246.05 × 28,643.70
  4. Step 4: Simplify right side
    30,830.70x = 1,324,657,982.39
  5. Step 5: Solve for x
    x = 1,324,657,982.39/30,830.70
  6. Step 6: Final answer
    x = 42,965.55

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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.