Home / 47,980.29-71,970.33-12,919.98

Finding the Fourth Proportional to 47,980.29, 71,970.33 and 12,919.98

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Solution

The fourth proportional to 47,980.29, 71,970.33 and 12,919.98 is: 19,379.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,980.29 : 71,970.33 = 12,919.98 : x
  2. Step 2: Convert to fraction form
    47,980.29/71,970.33 = 12,919.98/x
  3. Step 3: Cross multiply
    47,980.29x = 71,970.33 × 12,919.98
  4. Step 4: Simplify right side
    47,980.29x = 929,855,224.19
  5. Step 5: Solve for x
    x = 929,855,224.19/47,980.29
  6. Step 6: Final answer
    x = 19,379.94

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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.