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Finding the Fourth Proportional to 64,977.88, 89,669.70 and 35,169.88

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Solution

The fourth proportional to 64,977.88, 89,669.70 and 35,169.88 is: 48,534.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,977.88 : 89,669.70 = 35,169.88 : x
  2. Step 2: Convert to fraction form
    64,977.88/89,669.70 = 35,169.88/x
  3. Step 3: Cross multiply
    64,977.88x = 89,669.70 × 35,169.88
  4. Step 4: Simplify right side
    64,977.88x = 3,153,672,588.64
  5. Step 5: Solve for x
    x = 3,153,672,588.64/64,977.88
  6. Step 6: Final answer
    x = 48,534.56

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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.