Home / 72,912,145.80-109,368,218.70-19,059,457.80

Finding the Fourth Proportional to 72,912,145.80, 109,368,218.70 and 19,059,457.80

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Solution

The fourth proportional to 72,912,145.80, 109,368,218.70 and 19,059,457.80 is: 28,589,186.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,912,145.80 : 109,368,218.70 = 19,059,457.80 : x
  2. Step 2: Convert to fraction form
    72,912,145.80/109,368,218.70 = 19,059,457.80/x
  3. Step 3: Cross multiply
    72,912,145.80x = 109,368,218.70 × 19,059,457.80
  4. Step 4: Simplify right side
    72,912,145.80x = 2,084,498,948,973,821
  5. Step 5: Solve for x
    x = 2,084,498,948,973,821/72,912,145.80
  6. Step 6: Final answer
    x = 28,589,186.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.