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Finding the Fourth Proportional to 52,655.28, 72,664.02 and 28,783.32

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Solution

The fourth proportional to 52,655.28, 72,664.02 and 28,783.32 is: 39,720.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,655.28 : 72,664.02 = 28,783.32 : x
  2. Step 2: Convert to fraction form
    52,655.28/72,664.02 = 28,783.32/x
  3. Step 3: Cross multiply
    52,655.28x = 72,664.02 × 28,783.32
  4. Step 4: Simplify right side
    52,655.28x = 2,091,511,740.15
  5. Step 5: Solve for x
    x = 2,091,511,740.15/52,655.28
  6. Step 6: Final answer
    x = 39,720.84

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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.