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Finding the Fourth Proportional to 46,647.40, 69,995.40 and 20,354.80

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Solution

The fourth proportional to 46,647.40, 69,995.40 and 20,354.80 is: 30,542.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,647.40 : 69,995.40 = 20,354.80 : x
  2. Step 2: Convert to fraction form
    46,647.40/69,995.40 = 20,354.80/x
  3. Step 3: Cross multiply
    46,647.40x = 69,995.40 × 20,354.80
  4. Step 4: Simplify right side
    46,647.40x = 1,424,742,367.92
  5. Step 5: Solve for x
    x = 1,424,742,367.92/46,647.40
  6. Step 6: Final answer
    x = 30,542.80

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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.