Home / 72,890.16-100,589.48-40,623.88

Finding the Fourth Proportional to 72,890.16, 100,589.48 and 40,623.88

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Solution

The fourth proportional to 72,890.16, 100,589.48 and 40,623.88 is: 56,061.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,890.16 : 100,589.48 = 40,623.88 : x
  2. Step 2: Convert to fraction form
    72,890.16/100,589.48 = 40,623.88/x
  3. Step 3: Cross multiply
    72,890.16x = 100,589.48 × 40,623.88
  4. Step 4: Simplify right side
    72,890.16x = 4,086,334,964.78
  5. Step 5: Solve for x
    x = 4,086,334,964.78/72,890.16
  6. Step 6: Final answer
    x = 56,061.54

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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.