Home / 72,477.48-100,009.26-40,211.58

Finding the Fourth Proportional to 72,477.48, 100,009.26 and 40,211.58

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Solution

The fourth proportional to 72,477.48, 100,009.26 and 40,211.58 is: 55,486.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,477.48 : 100,009.26 = 40,211.58 : x
  2. Step 2: Convert to fraction form
    72,477.48/100,009.26 = 40,211.58/x
  3. Step 3: Cross multiply
    72,477.48x = 100,009.26 × 40,211.58
  4. Step 4: Simplify right side
    72,477.48x = 4,021,530,359.23
  5. Step 5: Solve for x
    x = 4,021,530,359.23/72,477.48
  6. Step 6: Final answer
    x = 55,486.62

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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.