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Finding the Fourth Proportional to 85,898.12, 128,847.17 and 26,733.80

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Solution

The fourth proportional to 85,898.12, 128,847.17 and 26,733.80 is: 40,100.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,898.12 : 128,847.17 = 26,733.80 : x
  2. Step 2: Convert to fraction form
    85,898.12/128,847.17 = 26,733.80/x
  3. Step 3: Cross multiply
    85,898.12x = 128,847.17 × 26,733.80
  4. Step 4: Simplify right side
    85,898.12x = 3,444,574,862.30
  5. Step 5: Solve for x
    x = 3,444,574,862.30/85,898.12
  6. Step 6: Final answer
    x = 40,100.70

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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.