Home / 99,635.87-137,492.44-56,609.75

Finding the Fourth Proportional to 99,635.87, 137,492.44 and 56,609.75

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Solution

The fourth proportional to 99,635.87, 137,492.44 and 56,609.75 is: 78,118.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,635.87 : 137,492.44 = 56,609.75 : x
  2. Step 2: Convert to fraction form
    99,635.87/137,492.44 = 56,609.75/x
  3. Step 3: Cross multiply
    99,635.87x = 137,492.44 × 56,609.75
  4. Step 4: Simplify right side
    99,635.87x = 7,783,412,857.50
  5. Step 5: Solve for x
    x = 7,783,412,857.50/99,635.87
  6. Step 6: Final answer
    x = 78,118.58

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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.