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Finding the Fourth Proportional to 45,416.60, 68,116.80 and 28,746.80

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Solution

The fourth proportional to 45,416.60, 68,116.80 and 28,746.80 is: 43,115.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,416.60 : 68,116.80 = 28,746.80 : x
  2. Step 2: Convert to fraction form
    45,416.60/68,116.80 = 28,746.80/x
  3. Step 3: Cross multiply
    45,416.60x = 68,116.80 × 28,746.80
  4. Step 4: Simplify right side
    45,416.60x = 1,958,140,026.24
  5. Step 5: Solve for x
    x = 1,958,140,026.24/45,416.60
  6. Step 6: Final answer
    x = 43,115.07

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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.