Home / 72,930.24-109,397.76-20,335.28

Finding the Fourth Proportional to 72,930.24, 109,397.76 and 20,335.28

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Solution

The fourth proportional to 72,930.24, 109,397.76 and 20,335.28 is: 30,503.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,930.24 : 109,397.76 = 20,335.28 : x
  2. Step 2: Convert to fraction form
    72,930.24/109,397.76 = 20,335.28/x
  3. Step 3: Cross multiply
    72,930.24x = 109,397.76 × 20,335.28
  4. Step 4: Simplify right side
    72,930.24x = 2,224,634,080.97
  5. Step 5: Solve for x
    x = 2,224,634,080.97/72,930.24
  6. Step 6: Final answer
    x = 30,503.59

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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.