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Finding the Fourth Proportional to 85,328.70, 127,984.17 and 22,995.42

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Solution

The fourth proportional to 85,328.70, 127,984.17 and 22,995.42 is: 34,490.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,328.70 : 127,984.17 = 22,995.42 : x
  2. Step 2: Convert to fraction form
    85,328.70/127,984.17 = 22,995.42/x
  3. Step 3: Cross multiply
    85,328.70x = 127,984.17 × 22,995.42
  4. Step 4: Simplify right side
    85,328.70x = 2,943,049,742.50
  5. Step 5: Solve for x
    x = 2,943,049,742.50/85,328.70
  6. Step 6: Final answer
    x = 34,490.74

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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.