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Finding the Fourth Proportional to 72,862.70, 100,553.04 and 42,650.84

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Solution

The fourth proportional to 72,862.70, 100,553.04 and 42,650.84 is: 58,859.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,862.70 : 100,553.04 = 42,650.84 : x
  2. Step 2: Convert to fraction form
    72,862.70/100,553.04 = 42,650.84/x
  3. Step 3: Cross multiply
    72,862.70x = 100,553.04 × 42,650.84
  4. Step 4: Simplify right side
    72,862.70x = 4,288,671,620.55
  5. Step 5: Solve for x
    x = 4,288,671,620.55/72,862.70
  6. Step 6: Final answer
    x = 58,859.63

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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.