Home / 56,848.68-85,273.56-21,780

Finding the Fourth Proportional to 56,848.68, 85,273.56 and 21,780

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Solution

The fourth proportional to 56,848.68, 85,273.56 and 21,780 is: 32,670.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,848.68 : 85,273.56 = 21,780 : x
  2. Step 2: Convert to fraction form
    56,848.68/85,273.56 = 21,780/x
  3. Step 3: Cross multiply
    56,848.68x = 85,273.56 × 21,780
  4. Step 4: Simplify right side
    56,848.68x = 1,857,258,136.80
  5. Step 5: Solve for x
    x = 1,857,258,136.80/56,848.68
  6. Step 6: Final answer
    x = 32,670.21

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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.