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Finding the Fourth Proportional to 86,309.67, 119,090.30 and 54,522.15

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Solution

The fourth proportional to 86,309.67, 119,090.30 and 54,522.15 is: 75,229.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,309.67 : 119,090.30 = 54,522.15 : x
  2. Step 2: Convert to fraction form
    86,309.67/119,090.30 = 54,522.15/x
  3. Step 3: Cross multiply
    86,309.67x = 119,090.30 × 54,522.15
  4. Step 4: Simplify right side
    86,309.67x = 6,493,058,927.53
  5. Step 5: Solve for x
    x = 6,493,058,927.53/86,309.67
  6. Step 6: Final answer
    x = 75,229.80

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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.