Home / 85,737.99-118,359.45-57,105.30

Finding the Fourth Proportional to 85,737.99, 118,359.45 and 57,105.30

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Solution

The fourth proportional to 85,737.99, 118,359.45 and 57,105.30 is: 78,832.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,737.99 : 118,359.45 = 57,105.30 : x
  2. Step 2: Convert to fraction form
    85,737.99/118,359.45 = 57,105.30/x
  3. Step 3: Cross multiply
    85,737.99x = 118,359.45 × 57,105.30
  4. Step 4: Simplify right side
    85,737.99x = 6,758,951,900.09
  5. Step 5: Solve for x
    x = 6,758,951,900.09/85,737.99
  6. Step 6: Final answer
    x = 78,832.64

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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.