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Finding the Fourth Proportional to 84,290.70, 126,461.42 and 25,126.36

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Solution

The fourth proportional to 84,290.70, 126,461.42 and 25,126.36 is: 37,697.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,290.70 : 126,461.42 = 25,126.36 : x
  2. Step 2: Convert to fraction form
    84,290.70/126,461.42 = 25,126.36/x
  3. Step 3: Cross multiply
    84,290.70x = 126,461.42 × 25,126.36
  4. Step 4: Simplify right side
    84,290.70x = 3,177,515,165.03
  5. Step 5: Solve for x
    x = 3,177,515,165.03/84,290.70
  6. Step 6: Final answer
    x = 37,697.10

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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.