Home / 42,704.96-64,043.76-20,212.57

Finding the Fourth Proportional to 42,704.96, 64,043.76 and 20,212.57

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Solution

The fourth proportional to 42,704.96, 64,043.76 and 20,212.57 is: 30,312.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,704.96 : 64,043.76 = 20,212.57 : x
  2. Step 2: Convert to fraction form
    42,704.96/64,043.76 = 20,212.57/x
  3. Step 3: Cross multiply
    42,704.96x = 64,043.76 × 20,212.57
  4. Step 4: Simplify right side
    42,704.96x = 1,294,489,137.92
  5. Step 5: Solve for x
    x = 1,294,489,137.92/42,704.96
  6. Step 6: Final answer
    x = 30,312.39

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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.