Home / 64,899.12-97,358.22-20,515.80

Finding the Fourth Proportional to 64,899.12, 97,358.22 and 20,515.80

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Solution

The fourth proportional to 64,899.12, 97,358.22 and 20,515.80 is: 30,776.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,899.12 : 97,358.22 = 20,515.80 : x
  2. Step 2: Convert to fraction form
    64,899.12/97,358.22 = 20,515.80/x
  3. Step 3: Cross multiply
    64,899.12x = 97,358.22 × 20,515.80
  4. Step 4: Simplify right side
    64,899.12x = 1,997,381,769.88
  5. Step 5: Solve for x
    x = 1,997,381,769.88/64,899.12
  6. Step 6: Final answer
    x = 30,776.72

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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.