Home / 64,747.58-97,121.24-20,378.21

Finding the Fourth Proportional to 64,747.58, 97,121.24 and 20,378.21

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Solution

The fourth proportional to 64,747.58, 97,121.24 and 20,378.21 is: 30,567.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,747.58 : 97,121.24 = 20,378.21 : x
  2. Step 2: Convert to fraction form
    64,747.58/97,121.24 = 20,378.21/x
  3. Step 3: Cross multiply
    64,747.58x = 97,121.24 × 20,378.21
  4. Step 4: Simplify right side
    64,747.58x = 1,979,157,165.09
  5. Step 5: Solve for x
    x = 1,979,157,165.09/64,747.58
  6. Step 6: Final answer
    x = 30,567.28

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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.