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Finding the Fourth Proportional to 82,701.40, 124,052.10 and 43,270.60

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Solution

The fourth proportional to 82,701.40, 124,052.10 and 43,270.60 is: 64,905.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,701.40 : 124,052.10 = 43,270.60 : x
  2. Step 2: Convert to fraction form
    82,701.40/124,052.10 = 43,270.60/x
  3. Step 3: Cross multiply
    82,701.40x = 124,052.10 × 43,270.60
  4. Step 4: Simplify right side
    82,701.40x = 5,367,808,798.26
  5. Step 5: Solve for x
    x = 5,367,808,798.26/82,701.40
  6. Step 6: Final answer
    x = 64,905.90

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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.