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Finding the Fourth Proportional to 85,314.70, 127,996.64 and 26,159.09

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Solution

The fourth proportional to 85,314.70, 127,996.64 and 26,159.09 is: 39,246.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,314.70 : 127,996.64 = 26,159.09 : x
  2. Step 2: Convert to fraction form
    85,314.70/127,996.64 = 26,159.09/x
  3. Step 3: Cross multiply
    85,314.70x = 127,996.64 × 26,159.09
  4. Step 4: Simplify right side
    85,314.70x = 3,348,275,625.46
  5. Step 5: Solve for x
    x = 3,348,275,625.46/85,314.70
  6. Step 6: Final answer
    x = 39,246.17

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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.