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Finding the Fourth Proportional to 72,402.99, 108,604.55 and 41,172.63

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Solution

The fourth proportional to 72,402.99, 108,604.55 and 41,172.63 is: 61,758.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,402.99 : 108,604.55 = 41,172.63 : x
  2. Step 2: Convert to fraction form
    72,402.99/108,604.55 = 41,172.63/x
  3. Step 3: Cross multiply
    72,402.99x = 108,604.55 × 41,172.63
  4. Step 4: Simplify right side
    72,402.99x = 4,471,534,953.47
  5. Step 5: Solve for x
    x = 4,471,534,953.47/72,402.99
  6. Step 6: Final answer
    x = 61,758.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.