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Finding the Fourth Proportional to 72,603.48, 100,191.49 and 40,338.24

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Solution

The fourth proportional to 72,603.48, 100,191.49 and 40,338.24 is: 55,666.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,603.48 : 100,191.49 = 40,338.24 : x
  2. Step 2: Convert to fraction form
    72,603.48/100,191.49 = 40,338.24/x
  3. Step 3: Cross multiply
    72,603.48x = 100,191.49 × 40,338.24
  4. Step 4: Simplify right side
    72,603.48x = 4,041,548,369.58
  5. Step 5: Solve for x
    x = 4,041,548,369.58/72,603.48
  6. Step 6: Final answer
    x = 55,666.04

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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.