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Finding the Fourth Proportional to 76,589.60, 114,970.80 and 59,136.80

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Solution

The fourth proportional to 76,589.60, 114,970.80 and 59,136.80 is: 88,771.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,589.60 : 114,970.80 = 59,136.80 : x
  2. Step 2: Convert to fraction form
    76,589.60/114,970.80 = 59,136.80/x
  3. Step 3: Cross multiply
    76,589.60x = 114,970.80 × 59,136.80
  4. Step 4: Simplify right side
    76,589.60x = 6,799,005,205.44
  5. Step 5: Solve for x
    x = 6,799,005,205.44/76,589.60
  6. Step 6: Final answer
    x = 88,771.91

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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.