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Finding the Fourth Proportional to 50,630, 69,868.68 and 29,421.20

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Solution

The fourth proportional to 50,630, 69,868.68 and 29,421.20 is: 40,600.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,630 : 69,868.68 = 29,421.20 : x
  2. Step 2: Convert to fraction form
    50,630/69,868.68 = 29,421.20/x
  3. Step 3: Cross multiply
    50,630x = 69,868.68 × 29,421.20
  4. Step 4: Simplify right side
    50,630x = 2,055,620,408.02
  5. Step 5: Solve for x
    x = 2,055,620,408.02/50,630
  6. Step 6: Final answer
    x = 40,600.84

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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.