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Finding the Fourth Proportional to 30,265.65, 45,398.48 and 8,079.11

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Solution

The fourth proportional to 30,265.65, 45,398.48 and 8,079.11 is: 12,118.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,265.65 : 45,398.48 = 8,079.11 : x
  2. Step 2: Convert to fraction form
    30,265.65/45,398.48 = 8,079.11/x
  3. Step 3: Cross multiply
    30,265.65x = 45,398.48 × 8,079.11
  4. Step 4: Simplify right side
    30,265.65x = 366,779,313.75
  5. Step 5: Solve for x
    x = 366,779,313.75/30,265.65
  6. Step 6: Final answer
    x = 12,118.67

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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.