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Finding the Fourth Proportional to 64,940.89, 89,659.77 and 53,032.68

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Solution

The fourth proportional to 64,940.89, 89,659.77 and 53,032.68 is: 73,218.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,940.89 : 89,659.77 = 53,032.68 : x
  2. Step 2: Convert to fraction form
    64,940.89/89,659.77 = 53,032.68/x
  3. Step 3: Cross multiply
    64,940.89x = 89,659.77 × 53,032.68
  4. Step 4: Simplify right side
    64,940.89x = 4,754,897,891.28
  5. Step 5: Solve for x
    x = 4,754,897,891.28/64,940.89
  6. Step 6: Final answer
    x = 73,218.86

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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.