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Finding the Fourth Proportional to 128,477.44, 192,605.41 and 49,646.98

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Solution

The fourth proportional to 128,477.44, 192,605.41 and 49,646.98 is: 74,427.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,477.44 : 192,605.41 = 49,646.98 : x
  2. Step 2: Convert to fraction form
    128,477.44/192,605.41 = 49,646.98/x
  3. Step 3: Cross multiply
    128,477.44x = 192,605.41 × 49,646.98
  4. Step 4: Simplify right side
    128,477.44x = 9,562,276,938.16
  5. Step 5: Solve for x
    x = 9,562,276,938.16/128,477.44
  6. Step 6: Final answer
    x = 74,427.67

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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.