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Finding the Fourth Proportional to 64,009.44, 88,305.60 and 38,815.20

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Solution

The fourth proportional to 64,009.44, 88,305.60 and 38,815.20 is: 53,548.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,009.44 : 88,305.60 = 38,815.20 : x
  2. Step 2: Convert to fraction form
    64,009.44/88,305.60 = 38,815.20/x
  3. Step 3: Cross multiply
    64,009.44x = 88,305.60 × 38,815.20
  4. Step 4: Simplify right side
    64,009.44x = 3,427,599,525.12
  5. Step 5: Solve for x
    x = 3,427,599,525.12/64,009.44
  6. Step 6: Final answer
    x = 53,548.34

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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.