Home / 72,486.06-100,036.80-40,223.71

Finding the Fourth Proportional to 72,486.06, 100,036.80 and 40,223.71

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Solution

The fourth proportional to 72,486.06, 100,036.80 and 40,223.71 is: 55,512.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,486.06 : 100,036.80 = 40,223.71 : x
  2. Step 2: Convert to fraction form
    72,486.06/100,036.80 = 40,223.71/x
  3. Step 3: Cross multiply
    72,486.06x = 100,036.80 × 40,223.71
  4. Step 4: Simplify right side
    72,486.06x = 4,023,851,525.80
  5. Step 5: Solve for x
    x = 4,023,851,525.80/72,486.06
  6. Step 6: Final answer
    x = 55,512.07

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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.