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Finding the Fourth Proportional to 72,415.82, 99,937.94 and 40,586.77

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Solution

The fourth proportional to 72,415.82, 99,937.94 and 40,586.77 is: 56,012.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,415.82 : 99,937.94 = 40,586.77 : x
  2. Step 2: Convert to fraction form
    72,415.82/99,937.94 = 40,586.77/x
  3. Step 3: Cross multiply
    72,415.82x = 99,937.94 × 40,586.77
  4. Step 4: Simplify right side
    72,415.82x = 4,056,157,732.28
  5. Step 5: Solve for x
    x = 4,056,157,732.28/72,415.82
  6. Step 6: Final answer
    x = 56,012.04

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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.