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Finding the Fourth Proportional to 73,821.40, 110,732.10 and 70,905.40

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Solution

The fourth proportional to 73,821.40, 110,732.10 and 70,905.40 is: 106,358.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,821.40 : 110,732.10 = 70,905.40 : x
  2. Step 2: Convert to fraction form
    73,821.40/110,732.10 = 70,905.40/x
  3. Step 3: Cross multiply
    73,821.40x = 110,732.10 × 70,905.40
  4. Step 4: Simplify right side
    73,821.40x = 7,851,503,843.34
  5. Step 5: Solve for x
    x = 7,851,503,843.34/73,821.40
  6. Step 6: Final answer
    x = 106,358.10

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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.