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Finding the Fourth Proportional to 71,418.40, 98,564.46 and 39,593.45

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Solution

The fourth proportional to 71,418.40, 98,564.46 and 39,593.45 is: 54,642.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,418.40 : 98,564.46 = 39,593.45 : x
  2. Step 2: Convert to fraction form
    71,418.40/98,564.46 = 39,593.45/x
  3. Step 3: Cross multiply
    71,418.40x = 98,564.46 × 39,593.45
  4. Step 4: Simplify right side
    71,418.40x = 3,902,507,018.79
  5. Step 5: Solve for x
    x = 3,902,507,018.79/71,418.40
  6. Step 6: Final answer
    x = 54,642.88

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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.