Home / 72,520.40-108,783.28-19,934

Finding the Fourth Proportional to 72,520.40, 108,783.28 and 19,934

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Solution

The fourth proportional to 72,520.40, 108,783.28 and 19,934 is: 29,901.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,520.40 : 108,783.28 = 19,934 : x
  2. Step 2: Convert to fraction form
    72,520.40/108,783.28 = 19,934/x
  3. Step 3: Cross multiply
    72,520.40x = 108,783.28 × 19,934
  4. Step 4: Simplify right side
    72,520.40x = 2,168,485,903.52
  5. Step 5: Solve for x
    x = 2,168,485,903.52/72,520.40
  6. Step 6: Final answer
    x = 29,901.74

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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.