Home / 56,731.82-78,289.24-31,237.65

Finding the Fourth Proportional to 56,731.82, 78,289.24 and 31,237.65

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Solution

The fourth proportional to 56,731.82, 78,289.24 and 31,237.65 is: 43,107.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,731.82 : 78,289.24 = 31,237.65 : x
  2. Step 2: Convert to fraction form
    56,731.82/78,289.24 = 31,237.65/x
  3. Step 3: Cross multiply
    56,731.82x = 78,289.24 × 31,237.65
  4. Step 4: Simplify right side
    56,731.82x = 2,445,571,877.89
  5. Step 5: Solve for x
    x = 2,445,571,877.89/56,731.82
  6. Step 6: Final answer
    x = 43,107.59

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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.