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Finding the Fourth Proportional to 50,868.20, 70,197.76 and 28,207.20

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Solution

The fourth proportional to 50,868.20, 70,197.76 and 28,207.20 is: 38,925.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,868.20 : 70,197.76 = 28,207.20 : x
  2. Step 2: Convert to fraction form
    50,868.20/70,197.76 = 28,207.20/x
  3. Step 3: Cross multiply
    50,868.20x = 70,197.76 × 28,207.20
  4. Step 4: Simplify right side
    50,868.20x = 1,980,082,185.35
  5. Step 5: Solve for x
    x = 1,980,082,185.35/50,868.20
  6. Step 6: Final answer
    x = 38,925.74

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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.