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Finding the Fourth Proportional to 82,372.40, 123,587.40 and 29,783.60

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Solution

The fourth proportional to 82,372.40, 123,587.40 and 29,783.60 is: 44,685.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,372.40 : 123,587.40 = 29,783.60 : x
  2. Step 2: Convert to fraction form
    82,372.40/123,587.40 = 29,783.60/x
  3. Step 3: Cross multiply
    82,372.40x = 123,587.40 × 29,783.60
  4. Step 4: Simplify right side
    82,372.40x = 3,680,877,686.64
  5. Step 5: Solve for x
    x = 3,680,877,686.64/82,372.40
  6. Step 6: Final answer
    x = 44,685.81

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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.