Home / 66,434.20-99,651.30-47,771.80

Finding the Fourth Proportional to 66,434.20, 99,651.30 and 47,771.80

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Solution

The fourth proportional to 66,434.20, 99,651.30 and 47,771.80 is: 71,657.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,434.20 : 99,651.30 = 47,771.80 : x
  2. Step 2: Convert to fraction form
    66,434.20/99,651.30 = 47,771.80/x
  3. Step 3: Cross multiply
    66,434.20x = 99,651.30 × 47,771.80
  4. Step 4: Simplify right side
    66,434.20x = 4,760,521,973.34
  5. Step 5: Solve for x
    x = 4,760,521,973.34/66,434.20
  6. Step 6: Final answer
    x = 71,657.70

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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.