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Finding the Fourth Proportional to 82,873.70, 124,347.42 and 43,421.58

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Solution

The fourth proportional to 82,873.70, 124,347.42 and 43,421.58 is: 65,151.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,873.70 : 124,347.42 = 43,421.58 : x
  2. Step 2: Convert to fraction form
    82,873.70/124,347.42 = 43,421.58/x
  3. Step 3: Cross multiply
    82,873.70x = 124,347.42 × 43,421.58
  4. Step 4: Simplify right side
    82,873.70x = 5,399,361,445.32
  5. Step 5: Solve for x
    x = 5,399,361,445.32/82,873.70
  6. Step 6: Final answer
    x = 65,151.69

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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.