Home / 77,234.60-115,706.10-39,666.80

Finding the Fourth Proportional to 77,234.60, 115,706.10 and 39,666.80

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Solution

The fourth proportional to 77,234.60, 115,706.10 and 39,666.80 is: 59,425.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,234.60 : 115,706.10 = 39,666.80 : x
  2. Step 2: Convert to fraction form
    77,234.60/115,706.10 = 39,666.80/x
  3. Step 3: Cross multiply
    77,234.60x = 115,706.10 × 39,666.80
  4. Step 4: Simplify right side
    77,234.60x = 4,589,690,727.48
  5. Step 5: Solve for x
    x = 4,589,690,727.48/77,234.60
  6. Step 6: Final answer
    x = 59,425.32

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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.