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Finding the Fourth Proportional to 73,967.26, 102,069.30 and 42,129.94

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Solution

The fourth proportional to 73,967.26, 102,069.30 and 42,129.94 is: 58,136.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,967.26 : 102,069.30 = 42,129.94 : x
  2. Step 2: Convert to fraction form
    73,967.26/102,069.30 = 42,129.94/x
  3. Step 3: Cross multiply
    73,967.26x = 102,069.30 × 42,129.94
  4. Step 4: Simplify right side
    73,967.26x = 4,300,173,484.84
  5. Step 5: Solve for x
    x = 4,300,173,484.84/73,967.26
  6. Step 6: Final answer
    x = 58,136.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.