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Finding the Fourth Proportional to 27,103.60, 40,525.80 and 20,105.20

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Solution

The fourth proportional to 27,103.60, 40,525.80 and 20,105.20 is: 30,061.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,103.60 : 40,525.80 = 20,105.20 : x
  2. Step 2: Convert to fraction form
    27,103.60/40,525.80 = 20,105.20/x
  3. Step 3: Cross multiply
    27,103.60x = 40,525.80 × 20,105.20
  4. Step 4: Simplify right side
    27,103.60x = 814,779,314.16
  5. Step 5: Solve for x
    x = 814,779,314.16/27,103.60
  6. Step 6: Final answer
    x = 30,061.66

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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.