Home / 40,257.60-55,582.56-30,809.28

Finding the Fourth Proportional to 40,257.60, 55,582.56 and 30,809.28

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Solution

The fourth proportional to 40,257.60, 55,582.56 and 30,809.28 is: 42,537.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,257.60 : 55,582.56 = 30,809.28 : x
  2. Step 2: Convert to fraction form
    40,257.60/55,582.56 = 30,809.28/x
  3. Step 3: Cross multiply
    40,257.60x = 55,582.56 × 30,809.28
  4. Step 4: Simplify right side
    40,257.60x = 1,712,458,654.16
  5. Step 5: Solve for x
    x = 1,712,458,654.16/40,257.60
  6. Step 6: Final answer
    x = 42,537.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.