Home / 51,446.47-77,172.69-19,856.70

Finding the Fourth Proportional to 51,446.47, 77,172.69 and 19,856.70

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Solution

The fourth proportional to 51,446.47, 77,172.69 and 19,856.70 is: 29,786.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,446.47 : 77,172.69 = 19,856.70 : x
  2. Step 2: Convert to fraction form
    51,446.47/77,172.69 = 19,856.70/x
  3. Step 3: Cross multiply
    51,446.47x = 77,172.69 × 19,856.70
  4. Step 4: Simplify right side
    51,446.47x = 1,532,395,096.81
  5. Step 5: Solve for x
    x = 1,532,395,096.81/51,446.47
  6. Step 6: Final answer
    x = 29,786.21

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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.