Home / 85,483.20-128,146.40-32,853.05

Finding the Fourth Proportional to 85,483.20, 128,146.40 and 32,853.05

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Solution

The fourth proportional to 85,483.20, 128,146.40 and 32,853.05 is: 49,249.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,483.20 : 128,146.40 = 32,853.05 : x
  2. Step 2: Convert to fraction form
    85,483.20/128,146.40 = 32,853.05/x
  3. Step 3: Cross multiply
    85,483.20x = 128,146.40 × 32,853.05
  4. Step 4: Simplify right side
    85,483.20x = 4,209,999,281.52
  5. Step 5: Solve for x
    x = 4,209,999,281.52/85,483.20
  6. Step 6: Final answer
    x = 49,249.43

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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.