Home / 47,738.20-71,607.30-12,681.40

Finding the Fourth Proportional to 47,738.20, 71,607.30 and 12,681.40

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Solution

The fourth proportional to 47,738.20, 71,607.30 and 12,681.40 is: 19,022.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,738.20 : 71,607.30 = 12,681.40 : x
  2. Step 2: Convert to fraction form
    47,738.20/71,607.30 = 12,681.40/x
  3. Step 3: Cross multiply
    47,738.20x = 71,607.30 × 12,681.40
  4. Step 4: Simplify right side
    47,738.20x = 908,080,814.22
  5. Step 5: Solve for x
    x = 908,080,814.22/47,738.20
  6. Step 6: Final answer
    x = 19,022.10

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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.