Home / 40,990.36-61,492.55-18,805.64

Finding the Fourth Proportional to 40,990.36, 61,492.55 and 18,805.64

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Solution

The fourth proportional to 40,990.36, 61,492.55 and 18,805.64 is: 28,211.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,990.36 : 61,492.55 = 18,805.64 : x
  2. Step 2: Convert to fraction form
    40,990.36/61,492.55 = 18,805.64/x
  3. Step 3: Cross multiply
    40,990.36x = 61,492.55 × 18,805.64
  4. Step 4: Simplify right side
    40,990.36x = 1,156,406,492.81
  5. Step 5: Solve for x
    x = 1,156,406,492.81/40,990.36
  6. Step 6: Final answer
    x = 28,211.67

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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.