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Finding the Fourth Proportional to 79,012.64, 109,033.62 and 45,029.10

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Solution

The fourth proportional to 79,012.64, 109,033.62 and 45,029.10 is: 62,137.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,012.64 : 109,033.62 = 45,029.10 : x
  2. Step 2: Convert to fraction form
    79,012.64/109,033.62 = 45,029.10/x
  3. Step 3: Cross multiply
    79,012.64x = 109,033.62 × 45,029.10
  4. Step 4: Simplify right side
    79,012.64x = 4,909,685,778.34
  5. Step 5: Solve for x
    x = 4,909,685,778.34/79,012.64
  6. Step 6: Final answer
    x = 62,137.98

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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.