Home / 52,122.36-78,171.12-20,531.28

Finding the Fourth Proportional to 52,122.36, 78,171.12 and 20,531.28

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Solution

The fourth proportional to 52,122.36, 78,171.12 and 20,531.28 is: 30,792.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,122.36 : 78,171.12 = 20,531.28 : x
  2. Step 2: Convert to fraction form
    52,122.36/78,171.12 = 20,531.28/x
  3. Step 3: Cross multiply
    52,122.36x = 78,171.12 × 20,531.28
  4. Step 4: Simplify right side
    52,122.36x = 1,604,953,152.63
  5. Step 5: Solve for x
    x = 1,604,953,152.63/52,122.36
  6. Step 6: Final answer
    x = 30,792.03

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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.