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Finding the Fourth Proportional to 71,809.20, 98,993.88 and 50,522.40

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Solution

The fourth proportional to 71,809.20, 98,993.88 and 50,522.40 is: 69,648.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,809.20 : 98,993.88 = 50,522.40 : x
  2. Step 2: Convert to fraction form
    71,809.20/98,993.88 = 50,522.40/x
  3. Step 3: Cross multiply
    71,809.20x = 98,993.88 × 50,522.40
  4. Step 4: Simplify right side
    71,809.20x = 5,001,408,402.91
  5. Step 5: Solve for x
    x = 5,001,408,402.91/71,809.20
  6. Step 6: Final answer
    x = 69,648.57

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1.5x scale

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.