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Finding the Fourth Proportional to 71,391.60, 107,087.40 and 54,802.80

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Solution

The fourth proportional to 71,391.60, 107,087.40 and 54,802.80 is: 82,204.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,391.60 : 107,087.40 = 54,802.80 : x
  2. Step 2: Convert to fraction form
    71,391.60/107,087.40 = 54,802.80/x
  3. Step 3: Cross multiply
    71,391.60x = 107,087.40 × 54,802.80
  4. Step 4: Simplify right side
    71,391.60x = 5,868,689,364.72
  5. Step 5: Solve for x
    x = 5,868,689,364.72/71,391.60
  6. Step 6: Final answer
    x = 82,204.20

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1.5x scale

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.