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Finding the Fourth Proportional to 85,758.95, 128,619.09 and 29,596.79

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Solution

The fourth proportional to 85,758.95, 128,619.09 and 29,596.79 is: 44,388.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,758.95 : 128,619.09 = 29,596.79 : x
  2. Step 2: Convert to fraction form
    85,758.95/128,619.09 = 29,596.79/x
  3. Step 3: Cross multiply
    85,758.95x = 128,619.09 × 29,596.79
  4. Step 4: Simplify right side
    85,758.95x = 3,806,712,518.27
  5. Step 5: Solve for x
    x = 3,806,712,518.27/85,758.95
  6. Step 6: Final answer
    x = 44,388.51

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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.