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Finding the Fourth Proportional to 85,892.94, 128,837.84 and 35,281.22

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Solution

The fourth proportional to 85,892.94, 128,837.84 and 35,281.22 is: 52,921.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,892.94 : 128,837.84 = 35,281.22 : x
  2. Step 2: Convert to fraction form
    85,892.94/128,837.84 = 35,281.22/x
  3. Step 3: Cross multiply
    85,892.94x = 128,837.84 × 35,281.22
  4. Step 4: Simplify right side
    85,892.94x = 4,545,555,356.77
  5. Step 5: Solve for x
    x = 4,545,555,356.77/85,892.94
  6. Step 6: Final answer
    x = 52,921.18

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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.