Home / 85,465.40-128,198.20-22,285.47

Finding the Fourth Proportional to 85,465.40, 128,198.20 and 22,285.47

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Solution

The fourth proportional to 85,465.40, 128,198.20 and 22,285.47 is: 33,428.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,465.40 : 128,198.20 = 22,285.47 : x
  2. Step 2: Convert to fraction form
    85,465.40/128,198.20 = 22,285.47/x
  3. Step 3: Cross multiply
    85,465.40x = 128,198.20 × 22,285.47
  4. Step 4: Simplify right side
    85,465.40x = 2,856,956,387.74
  5. Step 5: Solve for x
    x = 2,856,956,387.74/85,465.40
  6. Step 6: Final answer
    x = 33,428.22

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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.