Home / 56,779.68-78,359.48-31,629.16

Finding the Fourth Proportional to 56,779.68, 78,359.48 and 31,629.16

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Solution

The fourth proportional to 56,779.68, 78,359.48 and 31,629.16 is: 43,650.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,779.68 : 78,359.48 = 31,629.16 : x
  2. Step 2: Convert to fraction form
    56,779.68/78,359.48 = 31,629.16/x
  3. Step 3: Cross multiply
    56,779.68x = 78,359.48 × 31,629.16
  4. Step 4: Simplify right side
    56,779.68x = 2,478,444,530.44
  5. Step 5: Solve for x
    x = 2,478,444,530.44/56,779.68
  6. Step 6: Final answer
    x = 43,650.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.