Home / 38,715,970.82-53,428,719.20-21,075,380.55

Finding the Fourth Proportional to 38,715,970.82, 53,428,719.20 and 21,075,380.55

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Solution

The fourth proportional to 38,715,970.82, 53,428,719.20 and 21,075,380.55 is: 29,084,395.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,715,970.82 : 53,428,719.20 = 21,075,380.55 : x
  2. Step 2: Convert to fraction form
    38,715,970.82/53,428,719.20 = 21,075,380.55/x
  3. Step 3: Cross multiply
    38,715,970.82x = 53,428,719.20 × 21,075,380.55
  4. Step 4: Simplify right side
    38,715,970.82x = 1,126,030,589,333,714.75
  5. Step 5: Solve for x
    x = 1,126,030,589,333,714.75/38,715,970.82
  6. Step 6: Final answer
    x = 29,084,395.03

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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.