Home / 85,808.43-128,704.46-52,511.36

Finding the Fourth Proportional to 85,808.43, 128,704.46 and 52,511.36

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Solution

The fourth proportional to 85,808.43, 128,704.46 and 52,511.36 is: 78,762.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,808.43 : 128,704.46 = 52,511.36 : x
  2. Step 2: Convert to fraction form
    85,808.43/128,704.46 = 52,511.36/x
  3. Step 3: Cross multiply
    85,808.43x = 128,704.46 × 52,511.36
  4. Step 4: Simplify right side
    85,808.43x = 6,758,445,326.59
  5. Step 5: Solve for x
    x = 6,758,445,326.59/85,808.43
  6. Step 6: Final answer
    x = 78,762.02

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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.