Home / 90,418.34-135,653.98-40,487.30

Finding the Fourth Proportional to 90,418.34, 135,653.98 and 40,487.30

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Solution

The fourth proportional to 90,418.34, 135,653.98 and 40,487.30 is: 60,742.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,418.34 : 135,653.98 = 40,487.30 : x
  2. Step 2: Convert to fraction form
    90,418.34/135,653.98 = 40,487.30/x
  3. Step 3: Cross multiply
    90,418.34x = 135,653.98 × 40,487.30
  4. Step 4: Simplify right side
    90,418.34x = 5,492,263,384.45
  5. Step 5: Solve for x
    x = 5,492,263,384.45/90,418.34
  6. Step 6: Final answer
    x = 60,742.80

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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.