Home / 85,973.94-128,723.99-64,850.04

Finding the Fourth Proportional to 85,973.94, 128,723.99 and 64,850.04

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Solution

The fourth proportional to 85,973.94, 128,723.99 and 64,850.04 is: 97,096.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,973.94 : 128,723.99 = 64,850.04 : x
  2. Step 2: Convert to fraction form
    85,973.94/128,723.99 = 64,850.04/x
  3. Step 3: Cross multiply
    85,973.94x = 128,723.99 × 64,850.04
  4. Step 4: Simplify right side
    85,973.94x = 8,347,755,576.21
  5. Step 5: Solve for x
    x = 8,347,755,576.21/85,973.94
  6. Step 6: Final answer
    x = 97,096.35

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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.