Home / 72,692.97-100,316.85-40,428.04

Finding the Fourth Proportional to 72,692.97, 100,316.85 and 40,428.04

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Solution

The fourth proportional to 72,692.97, 100,316.85 and 40,428.04 is: 55,791.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,692.97 : 100,316.85 = 40,428.04 : x
  2. Step 2: Convert to fraction form
    72,692.97/100,316.85 = 40,428.04/x
  3. Step 3: Cross multiply
    72,692.97x = 100,316.85 × 40,428.04
  4. Step 4: Simplify right side
    72,692.97x = 4,055,613,373.68
  5. Step 5: Solve for x
    x = 4,055,613,373.68/72,692.97
  6. Step 6: Final answer
    x = 55,791.00

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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.