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Finding the Fourth Proportional to 64,785.98, 89,405.80 and 36,492.68

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Solution

The fourth proportional to 64,785.98, 89,405.80 and 36,492.68 is: 50,360.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,785.98 : 89,405.80 = 36,492.68 : x
  2. Step 2: Convert to fraction form
    64,785.98/89,405.80 = 36,492.68/x
  3. Step 3: Cross multiply
    64,785.98x = 89,405.80 × 36,492.68
  4. Step 4: Simplify right side
    64,785.98x = 3,262,657,249.54
  5. Step 5: Solve for x
    x = 3,262,657,249.54/64,785.98
  6. Step 6: Final answer
    x = 50,360.54

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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.