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Finding the Fourth Proportional to 52,662.78, 78,999.93 and 19,398.78

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Solution

The fourth proportional to 52,662.78, 78,999.93 and 19,398.78 is: 29,100.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,662.78 : 78,999.93 = 19,398.78 : x
  2. Step 2: Convert to fraction form
    52,662.78/78,999.93 = 19,398.78/x
  3. Step 3: Cross multiply
    52,662.78x = 78,999.93 × 19,398.78
  4. Step 4: Simplify right side
    52,662.78x = 1,532,502,262.09
  5. Step 5: Solve for x
    x = 1,532,502,262.09/52,662.78
  6. Step 6: Final answer
    x = 29,100.29

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1.5x scale

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.