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Finding the Fourth Proportional to 50,605.88, 75,916.98 and 19,018.40

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Solution

The fourth proportional to 50,605.88, 75,916.98 and 19,018.40 is: 28,530.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,605.88 : 75,916.98 = 19,018.40 : x
  2. Step 2: Convert to fraction form
    50,605.88/75,916.98 = 19,018.40/x
  3. Step 3: Cross multiply
    50,605.88x = 75,916.98 × 19,018.40
  4. Step 4: Simplify right side
    50,605.88x = 1,443,819,492.43
  5. Step 5: Solve for x
    x = 1,443,819,492.43/50,605.88
  6. Step 6: Final answer
    x = 28,530.67

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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.