Home / 56,930.40-78,562.32-31,779.36

Finding the Fourth Proportional to 56,930.40, 78,562.32 and 31,779.36

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Solution

The fourth proportional to 56,930.40, 78,562.32 and 31,779.36 is: 43,854.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,930.40 : 78,562.32 = 31,779.36 : x
  2. Step 2: Convert to fraction form
    56,930.40/78,562.32 = 31,779.36/x
  3. Step 3: Cross multiply
    56,930.40x = 78,562.32 × 31,779.36
  4. Step 4: Simplify right side
    56,930.40x = 2,496,660,249.72
  5. Step 5: Solve for x
    x = 2,496,660,249.72/56,930.40
  6. Step 6: Final answer
    x = 43,854.61

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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.