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Finding the Fourth Proportional to 85,276.60, 127,903.70 and 26,118.20

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Solution

The fourth proportional to 85,276.60, 127,903.70 and 26,118.20 is: 39,173.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,276.60 : 127,903.70 = 26,118.20 : x
  2. Step 2: Convert to fraction form
    85,276.60/127,903.70 = 26,118.20/x
  3. Step 3: Cross multiply
    85,276.60x = 127,903.70 × 26,118.20
  4. Step 4: Simplify right side
    85,276.60x = 3,340,614,417.34
  5. Step 5: Solve for x
    x = 3,340,614,417.34/85,276.60
  6. Step 6: Final answer
    x = 39,173.87

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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.