Home / 43,777.40-65,666.10-18,813.20

Finding the Fourth Proportional to 43,777.40, 65,666.10 and 18,813.20

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Solution

The fourth proportional to 43,777.40, 65,666.10 and 18,813.20 is: 28,219.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,777.40 : 65,666.10 = 18,813.20 : x
  2. Step 2: Convert to fraction form
    43,777.40/65,666.10 = 18,813.20/x
  3. Step 3: Cross multiply
    43,777.40x = 65,666.10 × 18,813.20
  4. Step 4: Simplify right side
    43,777.40x = 1,235,389,472.52
  5. Step 5: Solve for x
    x = 1,235,389,472.52/43,777.40
  6. Step 6: Final answer
    x = 28,219.80

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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.