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Finding the Fourth Proportional to 85,756.88, 118,353.25 and 49,459.74

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Solution

The fourth proportional to 85,756.88, 118,353.25 and 49,459.74 is: 68,259.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,756.88 : 118,353.25 = 49,459.74 : x
  2. Step 2: Convert to fraction form
    85,756.88/118,353.25 = 49,459.74/x
  3. Step 3: Cross multiply
    85,756.88x = 118,353.25 × 49,459.74
  4. Step 4: Simplify right side
    85,756.88x = 5,853,720,973.16
  5. Step 5: Solve for x
    x = 5,853,720,973.16/85,756.88
  6. Step 6: Final answer
    x = 68,259.49

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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.