Home / 84,123.36-126,187.56-31,523.04

Finding the Fourth Proportional to 84,123.36, 126,187.56 and 31,523.04

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Solution

The fourth proportional to 84,123.36, 126,187.56 and 31,523.04 is: 47,285.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,123.36 : 126,187.56 = 31,523.04 : x
  2. Step 2: Convert to fraction form
    84,123.36/126,187.56 = 31,523.04/x
  3. Step 3: Cross multiply
    84,123.36x = 126,187.56 × 31,523.04
  4. Step 4: Simplify right side
    84,123.36x = 3,977,815,501.38
  5. Step 5: Solve for x
    x = 3,977,815,501.38/84,123.36
  6. Step 6: Final answer
    x = 47,285.50

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1.5x scale

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.