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Finding the Fourth Proportional to 72,242.01, 99,692.51 and 40,411.17

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Solution

The fourth proportional to 72,242.01, 99,692.51 and 40,411.17 is: 55,766.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,242.01 : 99,692.51 = 40,411.17 : x
  2. Step 2: Convert to fraction form
    72,242.01/99,692.51 = 40,411.17/x
  3. Step 3: Cross multiply
    72,242.01x = 99,692.51 × 40,411.17
  4. Step 4: Simplify right side
    72,242.01x = 4,028,690,767.28
  5. Step 5: Solve for x
    x = 4,028,690,767.28/72,242.01
  6. Step 6: Final answer
    x = 55,766.59

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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.