Home / 72,621.60-108,640.80-62,869.20

Finding the Fourth Proportional to 72,621.60, 108,640.80 and 62,869.20

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Solution

The fourth proportional to 72,621.60, 108,640.80 and 62,869.20 is: 94,051.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,621.60 : 108,640.80 = 62,869.20 : x
  2. Step 2: Convert to fraction form
    72,621.60/108,640.80 = 62,869.20/x
  3. Step 3: Cross multiply
    72,621.60x = 108,640.80 × 62,869.20
  4. Step 4: Simplify right side
    72,621.60x = 6,830,160,183.36
  5. Step 5: Solve for x
    x = 6,830,160,183.36/72,621.60
  6. Step 6: Final answer
    x = 94,051.36

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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.