Home / 51,431.16-77,150.16-19,856.28

Finding the Fourth Proportional to 51,431.16, 77,150.16 and 19,856.28

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Solution

The fourth proportional to 51,431.16, 77,150.16 and 19,856.28 is: 29,785.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,431.16 : 77,150.16 = 19,856.28 : x
  2. Step 2: Convert to fraction form
    51,431.16/77,150.16 = 19,856.28/x
  3. Step 3: Cross multiply
    51,431.16x = 77,150.16 × 19,856.28
  4. Step 4: Simplify right side
    51,431.16x = 1,531,915,179.00
  5. Step 5: Solve for x
    x = 1,531,915,179.00/51,431.16
  6. Step 6: Final answer
    x = 29,785.74

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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.