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Finding the Fourth Proportional to 85,865.79, 118,502.10 and 47,637.66

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Solution

The fourth proportional to 85,865.79, 118,502.10 and 47,637.66 is: 65,744.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,865.79 : 118,502.10 = 47,637.66 : x
  2. Step 2: Convert to fraction form
    85,865.79/118,502.10 = 47,637.66/x
  3. Step 3: Cross multiply
    85,865.79x = 118,502.10 × 47,637.66
  4. Step 4: Simplify right side
    85,865.79x = 5,645,162,749.09
  5. Step 5: Solve for x
    x = 5,645,162,749.09/85,865.79
  6. Step 6: Final answer
    x = 65,744.03

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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.