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Finding the Fourth Proportional to 47,139, 65,053.34 and 25,919.80

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Solution

The fourth proportional to 47,139, 65,053.34 and 25,919.80 is: 35,770.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,139 : 65,053.34 = 25,919.80 : x
  2. Step 2: Convert to fraction form
    47,139/65,053.34 = 25,919.80/x
  3. Step 3: Cross multiply
    47,139x = 65,053.34 × 25,919.80
  4. Step 4: Simplify right side
    47,139x = 1,686,169,562.13
  5. Step 5: Solve for x
    x = 1,686,169,562.13/47,139
  6. Step 6: Final answer
    x = 35,770.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.