Home / 57,581.64-86,397.60-20,168.58

Finding the Fourth Proportional to 57,581.64, 86,397.60 and 20,168.58

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Solution

The fourth proportional to 57,581.64, 86,397.60 and 20,168.58 is: 30,261.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,581.64 : 86,397.60 = 20,168.58 : x
  2. Step 2: Convert to fraction form
    57,581.64/86,397.60 = 20,168.58/x
  3. Step 3: Cross multiply
    57,581.64x = 86,397.60 × 20,168.58
  4. Step 4: Simplify right side
    57,581.64x = 1,742,516,907.41
  5. Step 5: Solve for x
    x = 1,742,516,907.41/57,581.64
  6. Step 6: Final answer
    x = 30,261.68

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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.