Home / 81,002.68-121,495.60-21,834.76

Finding the Fourth Proportional to 81,002.68, 121,495.60 and 21,834.76

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Solution

The fourth proportional to 81,002.68, 121,495.60 and 21,834.76 is: 32,749.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,002.68 : 121,495.60 = 21,834.76 : x
  2. Step 2: Convert to fraction form
    81,002.68/121,495.60 = 21,834.76/x
  3. Step 3: Cross multiply
    81,002.68x = 121,495.60 × 21,834.76
  4. Step 4: Simplify right side
    81,002.68x = 2,652,827,267.06
  5. Step 5: Solve for x
    x = 2,652,827,267.06/81,002.68
  6. Step 6: Final answer
    x = 32,749.87

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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.