Home / 72,001.26-99,362.03-40,171.50

Finding the Fourth Proportional to 72,001.26, 99,362.03 and 40,171.50

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Solution

The fourth proportional to 72,001.26, 99,362.03 and 40,171.50 is: 55,436.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,001.26 : 99,362.03 = 40,171.50 : x
  2. Step 2: Convert to fraction form
    72,001.26/99,362.03 = 40,171.50/x
  3. Step 3: Cross multiply
    72,001.26x = 99,362.03 × 40,171.50
  4. Step 4: Simplify right side
    72,001.26x = 3,991,521,587.29
  5. Step 5: Solve for x
    x = 3,991,521,587.29/72,001.26
  6. Step 6: Final answer
    x = 55,436.83

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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.