Home / 64,081.09-87,789.63-61,685.18

Finding the Fourth Proportional to 64,081.09, 87,789.63 and 61,685.18

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Solution

The fourth proportional to 64,081.09, 87,789.63 and 61,685.18 is: 84,507.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,081.09 : 87,789.63 = 61,685.18 : x
  2. Step 2: Convert to fraction form
    64,081.09/87,789.63 = 61,685.18/x
  3. Step 3: Cross multiply
    64,081.09x = 87,789.63 × 61,685.18
  4. Step 4: Simplify right side
    64,081.09x = 5,415,318,689.74
  5. Step 5: Solve for x
    x = 5,415,318,689.74/64,081.09
  6. Step 6: Final answer
    x = 84,507.28

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.