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Finding the Fourth Proportional to 64,860, 89,506.80 and 35,052

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Solution

The fourth proportional to 64,860, 89,506.80 and 35,052 is: 48,371.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,860 : 89,506.80 = 35,052 : x
  2. Step 2: Convert to fraction form
    64,860/89,506.80 = 35,052/x
  3. Step 3: Cross multiply
    64,860x = 89,506.80 × 35,052
  4. Step 4: Simplify right side
    64,860x = 3,137,392,353.60
  5. Step 5: Solve for x
    x = 3,137,392,353.60/64,860
  6. Step 6: Final answer
    x = 48,371.76

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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.