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Finding the Fourth Proportional to 85,889.84, 128,833.23 and 35,277.90

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Solution

The fourth proportional to 85,889.84, 128,833.23 and 35,277.90 is: 52,916.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,889.84 : 128,833.23 = 35,277.90 : x
  2. Step 2: Convert to fraction form
    85,889.84/128,833.23 = 35,277.90/x
  3. Step 3: Cross multiply
    85,889.84x = 128,833.23 × 35,277.90
  4. Step 4: Simplify right side
    85,889.84x = 4,544,965,804.62
  5. Step 5: Solve for x
    x = 4,544,965,804.62/85,889.84
  6. Step 6: Final answer
    x = 52,916.22

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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.