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Finding the Fourth Proportional to 92,310.20, 138,454.32 and 29,980.64

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Solution

The fourth proportional to 92,310.20, 138,454.32 and 29,980.64 is: 44,967.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,310.20 : 138,454.32 = 29,980.64 : x
  2. Step 2: Convert to fraction form
    92,310.20/138,454.32 = 29,980.64/x
  3. Step 3: Cross multiply
    92,310.20x = 138,454.32 × 29,980.64
  4. Step 4: Simplify right side
    92,310.20x = 4,150,949,124.36
  5. Step 5: Solve for x
    x = 4,150,949,124.36/92,310.20
  6. Step 6: Final answer
    x = 44,967.39

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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.