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Finding the Fourth Proportional to 64,321.42, 88,763.56 and 39,170.92

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Solution

The fourth proportional to 64,321.42, 88,763.56 and 39,170.92 is: 54,055.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,321.42 : 88,763.56 = 39,170.92 : x
  2. Step 2: Convert to fraction form
    64,321.42/88,763.56 = 39,170.92/x
  3. Step 3: Cross multiply
    64,321.42x = 88,763.56 × 39,170.92
  4. Step 4: Simplify right side
    64,321.42x = 3,476,950,627.51
  5. Step 5: Solve for x
    x = 3,476,950,627.51/64,321.42
  6. Step 6: Final answer
    x = 54,055.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.