Home / 72,385.06-108,560.43-40,809.10

Finding the Fourth Proportional to 72,385.06, 108,560.43 and 40,809.10

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Solution

The fourth proportional to 72,385.06, 108,560.43 and 40,809.10 is: 61,203.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,385.06 : 108,560.43 = 40,809.10 : x
  2. Step 2: Convert to fraction form
    72,385.06/108,560.43 = 40,809.10/x
  3. Step 3: Cross multiply
    72,385.06x = 108,560.43 × 40,809.10
  4. Step 4: Simplify right side
    72,385.06x = 4,430,253,443.91
  5. Step 5: Solve for x
    x = 4,430,253,443.91/72,385.06
  6. Step 6: Final answer
    x = 61,203.98

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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.