Home / 51,428.16-77,145.66-19,853.28

Finding the Fourth Proportional to 51,428.16, 77,145.66 and 19,853.28

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Solution

The fourth proportional to 51,428.16, 77,145.66 and 19,853.28 is: 29,781.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,428.16 : 77,145.66 = 19,853.28 : x
  2. Step 2: Convert to fraction form
    51,428.16/77,145.66 = 19,853.28/x
  3. Step 3: Cross multiply
    51,428.16x = 77,145.66 × 19,853.28
  4. Step 4: Simplify right side
    51,428.16x = 1,531,594,388.76
  5. Step 5: Solve for x
    x = 1,531,594,388.76/51,428.16
  6. Step 6: Final answer
    x = 29,781.24

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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.