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Finding the Fourth Proportional to 52,272.70, 72,139.90 and 29,611.88

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Solution

The fourth proportional to 52,272.70, 72,139.90 and 29,611.88 is: 40,866.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,272.70 : 72,139.90 = 29,611.88 : x
  2. Step 2: Convert to fraction form
    52,272.70/72,139.90 = 29,611.88/x
  3. Step 3: Cross multiply
    52,272.70x = 72,139.90 × 29,611.88
  4. Step 4: Simplify right side
    52,272.70x = 2,136,197,890.87
  5. Step 5: Solve for x
    x = 2,136,197,890.87/52,272.70
  6. Step 6: Final answer
    x = 40,866.41

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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.