Home / 90,358.34-135,353.43-42,829.36

Finding the Fourth Proportional to 90,358.34, 135,353.43 and 42,829.36

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Solution

The fourth proportional to 90,358.34, 135,353.43 and 42,829.36 is: 64,156.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,358.34 : 135,353.43 = 42,829.36 : x
  2. Step 2: Convert to fraction form
    90,358.34/135,353.43 = 42,829.36/x
  3. Step 3: Cross multiply
    90,358.34x = 135,353.43 × 42,829.36
  4. Step 4: Simplify right side
    90,358.34x = 5,797,100,442.32
  5. Step 5: Solve for x
    x = 5,797,100,442.32/90,358.34
  6. Step 6: Final answer
    x = 64,156.79

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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.