Home / 72,856.08-109,284.30-20,265.57

Finding the Fourth Proportional to 72,856.08, 109,284.30 and 20,265.57

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Solution

The fourth proportional to 72,856.08, 109,284.30 and 20,265.57 is: 30,398.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,856.08 : 109,284.30 = 20,265.57 : x
  2. Step 2: Convert to fraction form
    72,856.08/109,284.30 = 20,265.57/x
  3. Step 3: Cross multiply
    72,856.08x = 109,284.30 × 20,265.57
  4. Step 4: Simplify right side
    72,856.08x = 2,214,708,631.55
  5. Step 5: Solve for x
    x = 2,214,708,631.55/72,856.08
  6. Step 6: Final answer
    x = 30,398.41

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1.5x scale

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.