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Finding the Fourth Proportional to 86,261.65, 129,315.52 and 33,658.90

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Solution

The fourth proportional to 86,261.65, 129,315.52 and 33,658.90 is: 50,458.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,261.65 : 129,315.52 = 33,658.90 : x
  2. Step 2: Convert to fraction form
    86,261.65/129,315.52 = 33,658.90/x
  3. Step 3: Cross multiply
    86,261.65x = 129,315.52 × 33,658.90
  4. Step 4: Simplify right side
    86,261.65x = 4,352,618,156.13
  5. Step 5: Solve for x
    x = 4,352,618,156.13/86,261.65
  6. Step 6: Final answer
    x = 50,458.32

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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.