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Finding the Fourth Proportional to 50,730.30, 70,035.72 and 37,978.86

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Solution

The fourth proportional to 50,730.30, 70,035.72 and 37,978.86 is: 52,431.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,730.30 : 70,035.72 = 37,978.86 : x
  2. Step 2: Convert to fraction form
    50,730.30/70,035.72 = 37,978.86/x
  3. Step 3: Cross multiply
    50,730.30x = 70,035.72 × 37,978.86
  4. Step 4: Simplify right side
    50,730.30x = 2,659,876,804.88
  5. Step 5: Solve for x
    x = 2,659,876,804.88/50,730.30
  6. Step 6: Final answer
    x = 52,431.72

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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.