Home / 56,725.12-85,061.76-19,780.48

Finding the Fourth Proportional to 56,725.12, 85,061.76 and 19,780.48

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Solution

The fourth proportional to 56,725.12, 85,061.76 and 19,780.48 is: 29,661.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,725.12 : 85,061.76 = 19,780.48 : x
  2. Step 2: Convert to fraction form
    56,725.12/85,061.76 = 19,780.48/x
  3. Step 3: Cross multiply
    56,725.12x = 85,061.76 × 19,780.48
  4. Step 4: Simplify right side
    56,725.12x = 1,682,562,442.44
  5. Step 5: Solve for x
    x = 1,682,562,442.44/56,725.12
  6. Step 6: Final answer
    x = 29,661.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.