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Finding the Fourth Proportional to 46,776.60, 70,188.60 and 20,481.60

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Solution

The fourth proportional to 46,776.60, 70,188.60 and 20,481.60 is: 30,732.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,776.60 : 70,188.60 = 20,481.60 : x
  2. Step 2: Convert to fraction form
    46,776.60/70,188.60 = 20,481.60/x
  3. Step 3: Cross multiply
    46,776.60x = 70,188.60 × 20,481.60
  4. Step 4: Simplify right side
    46,776.60x = 1,437,574,829.76
  5. Step 5: Solve for x
    x = 1,437,574,829.76/46,776.60
  6. Step 6: Final answer
    x = 30,732.78

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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.