Home / 56,730.78-85,109.00-18,779.99

Finding the Fourth Proportional to 56,730.78, 85,109.00 and 18,779.99

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Solution

The fourth proportional to 56,730.78, 85,109.00 and 18,779.99 is: 28,174.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,730.78 : 85,109.00 = 18,779.99 : x
  2. Step 2: Convert to fraction form
    56,730.78/85,109.00 = 18,779.99/x
  3. Step 3: Cross multiply
    56,730.78x = 85,109.00 × 18,779.99
  4. Step 4: Simplify right side
    56,730.78x = 1,598,345,649.47
  5. Step 5: Solve for x
    x = 1,598,345,649.47/56,730.78
  6. Step 6: Final answer
    x = 28,174.22

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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.