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Finding the Fourth Proportional to 46,663.60, 69,977.20 and 20,350.40

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Solution

The fourth proportional to 46,663.60, 69,977.20 and 20,350.40 is: 30,517.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,663.60 : 69,977.20 = 20,350.40 : x
  2. Step 2: Convert to fraction form
    46,663.60/69,977.20 = 20,350.40/x
  3. Step 3: Cross multiply
    46,663.60x = 69,977.20 × 20,350.40
  4. Step 4: Simplify right side
    46,663.60x = 1,424,064,010.88
  5. Step 5: Solve for x
    x = 1,424,064,010.88/46,663.60
  6. Step 6: Final answer
    x = 30,517.66

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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.