Home / 72,605.42-100,189.76-40,768.16

Finding the Fourth Proportional to 72,605.42, 100,189.76 and 40,768.16

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Solution

The fourth proportional to 72,605.42, 100,189.76 and 40,768.16 is: 56,256.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,605.42 : 100,189.76 = 40,768.16 : x
  2. Step 2: Convert to fraction form
    72,605.42/100,189.76 = 40,768.16/x
  3. Step 3: Cross multiply
    72,605.42x = 100,189.76 × 40,768.16
  4. Step 4: Simplify right side
    72,605.42x = 4,084,552,166.04
  5. Step 5: Solve for x
    x = 4,084,552,166.04/72,605.42
  6. Step 6: Final answer
    x = 56,256.85

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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.