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Finding the Fourth Proportional to 72,685.82, 109,071.03 and 30,562.85

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Solution

The fourth proportional to 72,685.82, 109,071.03 and 30,562.85 is: 45,862.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,685.82 : 109,071.03 = 30,562.85 : x
  2. Step 2: Convert to fraction form
    72,685.82/109,071.03 = 30,562.85/x
  3. Step 3: Cross multiply
    72,685.82x = 109,071.03 × 30,562.85
  4. Step 4: Simplify right side
    72,685.82x = 3,333,521,529.24
  5. Step 5: Solve for x
    x = 3,333,521,529.24/72,685.82
  6. Step 6: Final answer
    x = 45,862.06

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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.