Home / 51,420.31-77,116.63-18,136.06

Finding the Fourth Proportional to 51,420.31, 77,116.63 and 18,136.06

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Solution

The fourth proportional to 51,420.31, 77,116.63 and 18,136.06 is: 27,199.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,420.31 : 77,116.63 = 18,136.06 : x
  2. Step 2: Convert to fraction form
    51,420.31/77,116.63 = 18,136.06/x
  3. Step 3: Cross multiply
    51,420.31x = 77,116.63 × 18,136.06
  4. Step 4: Simplify right side
    51,420.31x = 1,398,591,828.68
  5. Step 5: Solve for x
    x = 1,398,591,828.68/51,420.31
  6. Step 6: Final answer
    x = 27,199.21

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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.