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Finding the Fourth Proportional to 47,381.78, 65,384.88 and 25,869.80

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Solution

The fourth proportional to 47,381.78, 65,384.88 and 25,869.80 is: 35,699.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,381.78 : 65,384.88 = 25,869.80 : x
  2. Step 2: Convert to fraction form
    47,381.78/65,384.88 = 25,869.80/x
  3. Step 3: Cross multiply
    47,381.78x = 65,384.88 × 25,869.80
  4. Step 4: Simplify right side
    47,381.78x = 1,691,493,768.62
  5. Step 5: Solve for x
    x = 1,691,493,768.62/47,381.78
  6. Step 6: Final answer
    x = 35,699.24

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1.5x scale

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.