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Finding the Fourth Proportional to 64,889, 89,559.78 and 36,595.16

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Solution

The fourth proportional to 64,889, 89,559.78 and 36,595.16 is: 50,508.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,889 : 89,559.78 = 36,595.16 : x
  2. Step 2: Convert to fraction form
    64,889/89,559.78 = 36,595.16/x
  3. Step 3: Cross multiply
    64,889x = 89,559.78 × 36,595.16
  4. Step 4: Simplify right side
    64,889x = 3,277,454,478.66
  5. Step 5: Solve for x
    x = 3,277,454,478.66/64,889
  6. Step 6: Final answer
    x = 50,508.63

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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.