Home / 72,411.20-108,519.60-51,610.40

Finding the Fourth Proportional to 72,411.20, 108,519.60 and 51,610.40

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Solution

The fourth proportional to 72,411.20, 108,519.60 and 51,610.40 is: 77,346.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,411.20 : 108,519.60 = 51,610.40 : x
  2. Step 2: Convert to fraction form
    72,411.20/108,519.60 = 51,610.40/x
  3. Step 3: Cross multiply
    72,411.20x = 108,519.60 × 51,610.40
  4. Step 4: Simplify right side
    72,411.20x = 5,600,739,963.84
  5. Step 5: Solve for x
    x = 5,600,739,963.84/72,411.20
  6. Step 6: Final answer
    x = 77,346.32

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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.