Home / 72,152.91-99,573.14-40,321.88

Finding the Fourth Proportional to 72,152.91, 99,573.14 and 40,321.88

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Solution

The fourth proportional to 72,152.91, 99,573.14 and 40,321.88 is: 55,645.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,152.91 : 99,573.14 = 40,321.88 : x
  2. Step 2: Convert to fraction form
    72,152.91/99,573.14 = 40,321.88/x
  3. Step 3: Cross multiply
    72,152.91x = 99,573.14 × 40,321.88
  4. Step 4: Simplify right side
    72,152.91x = 4,014,975,502.83
  5. Step 5: Solve for x
    x = 4,014,975,502.83/72,152.91
  6. Step 6: Final answer
    x = 55,645.37

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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.