Home / 102,069.48-140,855.04-56,747.28

Finding the Fourth Proportional to 102,069.48, 140,855.04 and 56,747.28

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Solution

The fourth proportional to 102,069.48, 140,855.04 and 56,747.28 is: 78,310.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,069.48 : 140,855.04 = 56,747.28 : x
  2. Step 2: Convert to fraction form
    102,069.48/140,855.04 = 56,747.28/x
  3. Step 3: Cross multiply
    102,069.48x = 140,855.04 × 56,747.28
  4. Step 4: Simplify right side
    102,069.48x = 7,993,140,394.29
  5. Step 5: Solve for x
    x = 7,993,140,394.29/102,069.48
  6. Step 6: Final answer
    x = 78,310.78

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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.