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Finding the Fourth Proportional to 65,056.34, 89,781.19 and 39,558.49

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Solution

The fourth proportional to 65,056.34, 89,781.19 and 39,558.49 is: 54,592.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,056.34 : 89,781.19 = 39,558.49 : x
  2. Step 2: Convert to fraction form
    65,056.34/89,781.19 = 39,558.49/x
  3. Step 3: Cross multiply
    65,056.34x = 89,781.19 × 39,558.49
  4. Step 4: Simplify right side
    65,056.34x = 3,551,607,983.45
  5. Step 5: Solve for x
    x = 3,551,607,983.45/65,056.34
  6. Step 6: Final answer
    x = 54,592.80

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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.