Home / 72,668.06-100,309.32-42,463.20

Finding the Fourth Proportional to 72,668.06, 100,309.32 and 42,463.20

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Solution

The fourth proportional to 72,668.06, 100,309.32 and 42,463.20 is: 58,615.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,668.06 : 100,309.32 = 42,463.20 : x
  2. Step 2: Convert to fraction form
    72,668.06/100,309.32 = 42,463.20/x
  3. Step 3: Cross multiply
    72,668.06x = 100,309.32 × 42,463.20
  4. Step 4: Simplify right side
    72,668.06x = 4,259,454,340.86
  5. Step 5: Solve for x
    x = 4,259,454,340.86/72,668.06
  6. Step 6: Final answer
    x = 58,615.22

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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.