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Finding the Fourth Proportional to 48,290.63, 72,417.74 and 20,212.63

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Solution

The fourth proportional to 48,290.63, 72,417.74 and 20,212.63 is: 30,311.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,290.63 : 72,417.74 = 20,212.63 : x
  2. Step 2: Convert to fraction form
    48,290.63/72,417.74 = 20,212.63/x
  3. Step 3: Cross multiply
    48,290.63x = 72,417.74 × 20,212.63
  4. Step 4: Simplify right side
    48,290.63x = 1,463,752,984.06
  5. Step 5: Solve for x
    x = 1,463,752,984.06/48,290.63
  6. Step 6: Final answer
    x = 30,311.33

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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.