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Finding the Fourth Proportional to 76,359.60, 114,612.30 and 38,961.90

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Solution

The fourth proportional to 76,359.60, 114,612.30 and 38,961.90 is: 58,480.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,359.60 : 114,612.30 = 38,961.90 : x
  2. Step 2: Convert to fraction form
    76,359.60/114,612.30 = 38,961.90/x
  3. Step 3: Cross multiply
    76,359.60x = 114,612.30 × 38,961.90
  4. Step 4: Simplify right side
    76,359.60x = 4,465,512,971.37
  5. Step 5: Solve for x
    x = 4,465,512,971.37/76,359.60
  6. Step 6: Final answer
    x = 58,480.05

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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.