Home / 56,779.56-78,357.24-31,629.60

Finding the Fourth Proportional to 56,779.56, 78,357.24 and 31,629.60

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Solution

The fourth proportional to 56,779.56, 78,357.24 and 31,629.60 is: 43,649.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,779.56 : 78,357.24 = 31,629.60 : x
  2. Step 2: Convert to fraction form
    56,779.56/78,357.24 = 31,629.60/x
  3. Step 3: Cross multiply
    56,779.56x = 78,357.24 × 31,629.60
  4. Step 4: Simplify right side
    56,779.56x = 2,478,408,158.30
  5. Step 5: Solve for x
    x = 2,478,408,158.30/56,779.56
  6. Step 6: Final answer
    x = 43,649.65

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1.5x scale

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.