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Finding the Fourth Proportional to 64,072.30, 88,415.88 and 35,391.30

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Solution

The fourth proportional to 64,072.30, 88,415.88 and 35,391.30 is: 48,837.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,072.30 : 88,415.88 = 35,391.30 : x
  2. Step 2: Convert to fraction form
    64,072.30/88,415.88 = 35,391.30/x
  3. Step 3: Cross multiply
    64,072.30x = 88,415.88 × 35,391.30
  4. Step 4: Simplify right side
    64,072.30x = 3,129,152,933.84
  5. Step 5: Solve for x
    x = 3,129,152,933.84/64,072.30
  6. Step 6: Final answer
    x = 48,837.84

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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.