Home / 85,911.83-118,519.47-55,704.80

Finding the Fourth Proportional to 85,911.83, 118,519.47 and 55,704.80

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Solution

The fourth proportional to 85,911.83, 118,519.47 and 55,704.80 is: 76,847.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,911.83 : 118,519.47 = 55,704.80 : x
  2. Step 2: Convert to fraction form
    85,911.83/118,519.47 = 55,704.80/x
  3. Step 3: Cross multiply
    85,911.83x = 118,519.47 × 55,704.80
  4. Step 4: Simplify right side
    85,911.83x = 6,602,103,372.46
  5. Step 5: Solve for x
    x = 6,602,103,372.46/85,911.83
  6. Step 6: Final answer
    x = 76,847.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.