Home / 72,929.13-109,412.15-20,338.62

Finding the Fourth Proportional to 72,929.13, 109,412.15 and 20,338.62

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Solution

The fourth proportional to 72,929.13, 109,412.15 and 20,338.62 is: 30,513.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,929.13 : 109,412.15 = 20,338.62 : x
  2. Step 2: Convert to fraction form
    72,929.13/109,412.15 = 20,338.62/x
  3. Step 3: Cross multiply
    72,929.13x = 109,412.15 × 20,338.62
  4. Step 4: Simplify right side
    72,929.13x = 2,225,292,142.23
  5. Step 5: Solve for x
    x = 2,225,292,142.23/72,929.13
  6. Step 6: Final answer
    x = 30,513.08

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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.