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Finding the Fourth Proportional to 85,735.02, 128,608.68 and 29,574.30

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Solution

The fourth proportional to 85,735.02, 128,608.68 and 29,574.30 is: 44,363.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,735.02 : 128,608.68 = 29,574.30 : x
  2. Step 2: Convert to fraction form
    85,735.02/128,608.68 = 29,574.30/x
  3. Step 3: Cross multiply
    85,735.02x = 128,608.68 × 29,574.30
  4. Step 4: Simplify right side
    85,735.02x = 3,803,511,684.92
  5. Step 5: Solve for x
    x = 3,803,511,684.92/85,735.02
  6. Step 6: Final answer
    x = 44,363.57

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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.