Home / 71,979.06-99,330.84-40,147.93

Finding the Fourth Proportional to 71,979.06, 99,330.84 and 40,147.93

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Solution

The fourth proportional to 71,979.06, 99,330.84 and 40,147.93 is: 55,404.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,979.06 : 99,330.84 = 40,147.93 : x
  2. Step 2: Convert to fraction form
    71,979.06/99,330.84 = 40,147.93/x
  3. Step 3: Cross multiply
    71,979.06x = 99,330.84 × 40,147.93
  4. Step 4: Simplify right side
    71,979.06x = 3,987,927,611.16
  5. Step 5: Solve for x
    x = 3,987,927,611.16/71,979.06
  6. Step 6: Final answer
    x = 55,404.00

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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.