Home / 82,421.28-123,638.40-32,497.92

Finding the Fourth Proportional to 82,421.28, 123,638.40 and 32,497.92

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Solution

The fourth proportional to 82,421.28, 123,638.40 and 32,497.92 is: 48,749.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,421.28 : 123,638.40 = 32,497.92 : x
  2. Step 2: Convert to fraction form
    82,421.28/123,638.40 = 32,497.92/x
  3. Step 3: Cross multiply
    82,421.28x = 123,638.40 × 32,497.92
  4. Step 4: Simplify right side
    82,421.28x = 4,017,990,832.13
  5. Step 5: Solve for x
    x = 4,017,990,832.13/82,421.28
  6. Step 6: Final answer
    x = 48,749.44

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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.