Home / 72,930.20-109,176.60-43,332.80

Finding the Fourth Proportional to 72,930.20, 109,176.60 and 43,332.80

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Solution

The fourth proportional to 72,930.20, 109,176.60 and 43,332.80 is: 64,869.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,930.20 : 109,176.60 = 43,332.80 : x
  2. Step 2: Convert to fraction form
    72,930.20/109,176.60 = 43,332.80/x
  3. Step 3: Cross multiply
    72,930.20x = 109,176.60 × 43,332.80
  4. Step 4: Simplify right side
    72,930.20x = 4,730,927,772.48
  5. Step 5: Solve for x
    x = 4,730,927,772.48/72,930.20
  6. Step 6: Final answer
    x = 64,869.26

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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.