Home / 40,136,980.72-55,388,990.36-21,802,279.92

Finding the Fourth Proportional to 40,136,980.72, 55,388,990.36 and 21,802,279.92

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Solution

The fourth proportional to 40,136,980.72, 55,388,990.36 and 21,802,279.92 is: 30,087,122.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,136,980.72 : 55,388,990.36 = 21,802,279.92 : x
  2. Step 2: Convert to fraction form
    40,136,980.72/55,388,990.36 = 21,802,279.92/x
  3. Step 3: Cross multiply
    40,136,980.72x = 55,388,990.36 × 21,802,279.92
  4. Step 4: Simplify right side
    40,136,980.72x = 1,207,606,272,314,901.75
  5. Step 5: Solve for x
    x = 1,207,606,272,314,901.75/40,136,980.72
  6. Step 6: Final answer
    x = 30,087,122.91

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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.