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Finding the Fourth Proportional to 63,776.40, 95,664.60 and 40,429.20

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Solution

The fourth proportional to 63,776.40, 95,664.60 and 40,429.20 is: 60,643.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,776.40 : 95,664.60 = 40,429.20 : x
  2. Step 2: Convert to fraction form
    63,776.40/95,664.60 = 40,429.20/x
  3. Step 3: Cross multiply
    63,776.40x = 95,664.60 × 40,429.20
  4. Step 4: Simplify right side
    63,776.40x = 3,867,643,246.32
  5. Step 5: Solve for x
    x = 3,867,643,246.32/63,776.40
  6. Step 6: Final answer
    x = 60,643.80

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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.