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Finding the Fourth Proportional to 50,990.64, 70,350.84 and 28,630.32

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Solution

The fourth proportional to 50,990.64, 70,350.84 and 28,630.32 is: 39,500.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,990.64 : 70,350.84 = 28,630.32 : x
  2. Step 2: Convert to fraction form
    50,990.64/70,350.84 = 28,630.32/x
  3. Step 3: Cross multiply
    50,990.64x = 70,350.84 × 28,630.32
  4. Step 4: Simplify right side
    50,990.64x = 2,014,167,061.47
  5. Step 5: Solve for x
    x = 2,014,167,061.47/50,990.64
  6. Step 6: Final answer
    x = 39,500.72

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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.