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Finding the Fourth Proportional to 79,681.44, 119,726.16 and 60,144

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Solution

The fourth proportional to 79,681.44, 119,726.16 and 60,144 is: 90,369.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,681.44 : 119,726.16 = 60,144 : x
  2. Step 2: Convert to fraction form
    79,681.44/119,726.16 = 60,144/x
  3. Step 3: Cross multiply
    79,681.44x = 119,726.16 × 60,144
  4. Step 4: Simplify right side
    79,681.44x = 7,200,810,167.04
  5. Step 5: Solve for x
    x = 7,200,810,167.04/79,681.44
  6. Step 6: Final answer
    x = 90,369.98

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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.