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Finding the Fourth Proportional to 71,325.60, 106,988.40 and 49,207.20

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Solution

The fourth proportional to 71,325.60, 106,988.40 and 49,207.20 is: 73,810.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,325.60 : 106,988.40 = 49,207.20 : x
  2. Step 2: Convert to fraction form
    71,325.60/106,988.40 = 49,207.20/x
  3. Step 3: Cross multiply
    71,325.60x = 106,988.40 × 49,207.20
  4. Step 4: Simplify right side
    71,325.60x = 5,264,599,596.48
  5. Step 5: Solve for x
    x = 5,264,599,596.48/71,325.60
  6. Step 6: Final answer
    x = 73,810.80

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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.