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Finding the Fourth Proportional to 70,866.92, 106,300.53 and 66,536.66

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Solution

The fourth proportional to 70,866.92, 106,300.53 and 66,536.66 is: 99,805.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,866.92 : 106,300.53 = 66,536.66 : x
  2. Step 2: Convert to fraction form
    70,866.92/106,300.53 = 66,536.66/x
  3. Step 3: Cross multiply
    70,866.92x = 106,300.53 × 66,536.66
  4. Step 4: Simplify right side
    70,866.92x = 7,072,882,488.18
  5. Step 5: Solve for x
    x = 7,072,882,488.18/70,866.92
  6. Step 6: Final answer
    x = 99,805.13

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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.