Home / 67,869.71-101,819.76-20,485.64

Finding the Fourth Proportional to 67,869.71, 101,819.76 and 20,485.64

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Solution

The fourth proportional to 67,869.71, 101,819.76 and 20,485.64 is: 30,733.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,869.71 : 101,819.76 = 20,485.64 : x
  2. Step 2: Convert to fraction form
    67,869.71/101,819.76 = 20,485.64/x
  3. Step 3: Cross multiply
    67,869.71x = 101,819.76 × 20,485.64
  4. Step 4: Simplify right side
    67,869.71x = 2,085,842,948.25
  5. Step 5: Solve for x
    x = 2,085,842,948.25/67,869.71
  6. Step 6: Final answer
    x = 30,733.05

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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.