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Finding the Fourth Proportional to 89,783.80, 134,967.30 and 63,669.40

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Solution

The fourth proportional to 89,783.80, 134,967.30 and 63,669.40 is: 95,710.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,783.80 : 134,967.30 = 63,669.40 : x
  2. Step 2: Convert to fraction form
    89,783.80/134,967.30 = 63,669.40/x
  3. Step 3: Cross multiply
    89,783.80x = 134,967.30 × 63,669.40
  4. Step 4: Simplify right side
    89,783.80x = 8,593,287,010.62
  5. Step 5: Solve for x
    x = 8,593,287,010.62/89,783.80
  6. Step 6: Final answer
    x = 95,710.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.