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Finding the Fourth Proportional to 64,457.44, 96,690.80 and 26,979.80

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Solution

The fourth proportional to 64,457.44, 96,690.80 and 26,979.80 is: 40,471.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,457.44 : 96,690.80 = 26,979.80 : x
  2. Step 2: Convert to fraction form
    64,457.44/96,690.80 = 26,979.80/x
  3. Step 3: Cross multiply
    64,457.44x = 96,690.80 × 26,979.80
  4. Step 4: Simplify right side
    64,457.44x = 2,608,698,445.84
  5. Step 5: Solve for x
    x = 2,608,698,445.84/64,457.44
  6. Step 6: Final answer
    x = 40,471.64

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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.