Home / 56,601.72-78,111.09-31,110.86

Finding the Fourth Proportional to 56,601.72, 78,111.09 and 31,110.86

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Solution

The fourth proportional to 56,601.72, 78,111.09 and 31,110.86 is: 42,933.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,601.72 : 78,111.09 = 31,110.86 : x
  2. Step 2: Convert to fraction form
    56,601.72/78,111.09 = 31,110.86/x
  3. Step 3: Cross multiply
    56,601.72x = 78,111.09 × 31,110.86
  4. Step 4: Simplify right side
    56,601.72x = 2,430,103,380.72
  5. Step 5: Solve for x
    x = 2,430,103,380.72/56,601.72
  6. Step 6: Final answer
    x = 42,933.38

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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.