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Finding the Fourth Proportional to 64,971.45, 89,659.63 and 36,291.51

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Solution

The fourth proportional to 64,971.45, 89,659.63 and 36,291.51 is: 50,081.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,971.45 : 89,659.63 = 36,291.51 : x
  2. Step 2: Convert to fraction form
    64,971.45/89,659.63 = 36,291.51/x
  3. Step 3: Cross multiply
    64,971.45x = 89,659.63 × 36,291.51
  4. Step 4: Simplify right side
    64,971.45x = 3,253,883,134.59
  5. Step 5: Solve for x
    x = 3,253,883,134.59/64,971.45
  6. Step 6: Final answer
    x = 50,081.74

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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.