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Finding the Fourth Proportional to 85,051.48, 127,583.70 and 25,892.20

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Solution

The fourth proportional to 85,051.48, 127,583.70 and 25,892.20 is: 38,840.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,051.48 : 127,583.70 = 25,892.20 : x
  2. Step 2: Convert to fraction form
    85,051.48/127,583.70 = 25,892.20/x
  3. Step 3: Cross multiply
    85,051.48x = 127,583.70 × 25,892.20
  4. Step 4: Simplify right side
    85,051.48x = 3,303,422,677.14
  5. Step 5: Solve for x
    x = 3,303,422,677.14/85,051.48
  6. Step 6: Final answer
    x = 38,840.27

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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.