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Finding the Fourth Proportional to 77,649.60, 116,445.60 and 30,892.80

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Solution

The fourth proportional to 77,649.60, 116,445.60 and 30,892.80 is: 46,327.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,649.60 : 116,445.60 = 30,892.80 : x
  2. Step 2: Convert to fraction form
    77,649.60/116,445.60 = 30,892.80/x
  3. Step 3: Cross multiply
    77,649.60x = 116,445.60 × 30,892.80
  4. Step 4: Simplify right side
    77,649.60x = 3,597,330,631.68
  5. Step 5: Solve for x
    x = 3,597,330,631.68/77,649.60
  6. Step 6: Final answer
    x = 46,327.74

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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.