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Finding the Fourth Proportional to 46,612.80, 69,919.20 and 20,368.80

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Solution

The fourth proportional to 46,612.80, 69,919.20 and 20,368.80 is: 30,553.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,612.80 : 69,919.20 = 20,368.80 : x
  2. Step 2: Convert to fraction form
    46,612.80/69,919.20 = 20,368.80/x
  3. Step 3: Cross multiply
    46,612.80x = 69,919.20 × 20,368.80
  4. Step 4: Simplify right side
    46,612.80x = 1,424,170,200.96
  5. Step 5: Solve for x
    x = 1,424,170,200.96/46,612.80
  6. Step 6: Final answer
    x = 30,553.20

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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.