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Finding the Fourth Proportional to 83,246.40, 124,869.60 and 71,841.60

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Solution

The fourth proportional to 83,246.40, 124,869.60 and 71,841.60 is: 107,762.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,246.40 : 124,869.60 = 71,841.60 : x
  2. Step 2: Convert to fraction form
    83,246.40/124,869.60 = 71,841.60/x
  3. Step 3: Cross multiply
    83,246.40x = 124,869.60 × 71,841.60
  4. Step 4: Simplify right side
    83,246.40x = 8,970,831,855.36
  5. Step 5: Solve for x
    x = 8,970,831,855.36/83,246.40
  6. Step 6: Final answer
    x = 107,762.40

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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.