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Finding the Fourth Proportional to 71,763.60, 107,645.40 and 45,519.60

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Solution

The fourth proportional to 71,763.60, 107,645.40 and 45,519.60 is: 68,279.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,763.60 : 107,645.40 = 45,519.60 : x
  2. Step 2: Convert to fraction form
    71,763.60/107,645.40 = 45,519.60/x
  3. Step 3: Cross multiply
    71,763.60x = 107,645.40 × 45,519.60
  4. Step 4: Simplify right side
    71,763.60x = 4,899,975,549.84
  5. Step 5: Solve for x
    x = 4,899,975,549.84/71,763.60
  6. Step 6: Final answer
    x = 68,279.40

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1.5x scale

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.