Home / 72,690.30-109,035.45-20,095.38

Finding the Fourth Proportional to 72,690.30, 109,035.45 and 20,095.38

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Solution

The fourth proportional to 72,690.30, 109,035.45 and 20,095.38 is: 30,143.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,690.30 : 109,035.45 = 20,095.38 : x
  2. Step 2: Convert to fraction form
    72,690.30/109,035.45 = 20,095.38/x
  3. Step 3: Cross multiply
    72,690.30x = 109,035.45 × 20,095.38
  4. Step 4: Simplify right side
    72,690.30x = 2,191,108,801.22
  5. Step 5: Solve for x
    x = 2,191,108,801.22/72,690.30
  6. Step 6: Final answer
    x = 30,143.07

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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.