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Finding the Fourth Proportional to 73,007.40, 109,640.70 and 53,308.20

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Solution

The fourth proportional to 73,007.40, 109,640.70 and 53,308.20 is: 80,056.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,007.40 : 109,640.70 = 53,308.20 : x
  2. Step 2: Convert to fraction form
    73,007.40/109,640.70 = 53,308.20/x
  3. Step 3: Cross multiply
    73,007.40x = 109,640.70 × 53,308.20
  4. Step 4: Simplify right side
    73,007.40x = 5,844,748,363.74
  5. Step 5: Solve for x
    x = 5,844,748,363.74/73,007.40
  6. Step 6: Final answer
    x = 80,056.93

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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.