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Finding the Fourth Proportional to 101,029.70, 139,418.30 and 55,706.92

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Solution

The fourth proportional to 101,029.70, 139,418.30 and 55,706.92 is: 76,874.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,029.70 : 139,418.30 = 55,706.92 : x
  2. Step 2: Convert to fraction form
    101,029.70/139,418.30 = 55,706.92/x
  3. Step 3: Cross multiply
    101,029.70x = 139,418.30 × 55,706.92
  4. Step 4: Simplify right side
    101,029.70x = 7,766,563,875.36
  5. Step 5: Solve for x
    x = 7,766,563,875.36/101,029.70
  6. Step 6: Final answer
    x = 76,874.06

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1.5x scale

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.