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Finding the Fourth Proportional to 77,173.58, 115,764.84 and 29,788.93

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Solution

The fourth proportional to 77,173.58, 115,764.84 and 29,788.93 is: 44,685.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,173.58 : 115,764.84 = 29,788.93 : x
  2. Step 2: Convert to fraction form
    77,173.58/115,764.84 = 29,788.93/x
  3. Step 3: Cross multiply
    77,173.58x = 115,764.84 × 29,788.93
  4. Step 4: Simplify right side
    77,173.58x = 3,448,510,136.40
  5. Step 5: Solve for x
    x = 3,448,510,136.40/77,173.58
  6. Step 6: Final answer
    x = 44,685.11

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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.