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Finding the Fourth Proportional to 70,681.61, 106,022.13 and 18,091.01

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Solution

The fourth proportional to 70,681.61, 106,022.13 and 18,091.01 is: 27,136.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,681.61 : 106,022.13 = 18,091.01 : x
  2. Step 2: Convert to fraction form
    70,681.61/106,022.13 = 18,091.01/x
  3. Step 3: Cross multiply
    70,681.61x = 106,022.13 × 18,091.01
  4. Step 4: Simplify right side
    70,681.61x = 1,918,046,883.94
  5. Step 5: Solve for x
    x = 1,918,046,883.94/70,681.61
  6. Step 6: Final answer
    x = 27,136.44

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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.