Home / 67,011.12-100,539.36-42,069.60

Finding the Fourth Proportional to 67,011.12, 100,539.36 and 42,069.60

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Solution

The fourth proportional to 67,011.12, 100,539.36 and 42,069.60 is: 63,118.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,011.12 : 100,539.36 = 42,069.60 : x
  2. Step 2: Convert to fraction form
    67,011.12/100,539.36 = 42,069.60/x
  3. Step 3: Cross multiply
    67,011.12x = 100,539.36 × 42,069.60
  4. Step 4: Simplify right side
    67,011.12x = 4,229,650,659.46
  5. Step 5: Solve for x
    x = 4,229,650,659.46/67,011.12
  6. Step 6: Final answer
    x = 63,118.64

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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.