Home / 86,102,165.42-129,153,723.81-21,405,970.56

Finding the Fourth Proportional to 86,102,165.42, 129,153,723.81 and 21,405,970.56

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Solution

The fourth proportional to 86,102,165.42, 129,153,723.81 and 21,405,970.56 is: 32,109,074.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,102,165.42 : 129,153,723.81 = 21,405,970.56 : x
  2. Step 2: Convert to fraction form
    86,102,165.42/129,153,723.81 = 21,405,970.56/x
  3. Step 3: Cross multiply
    86,102,165.42x = 129,153,723.81 × 21,405,970.56
  4. Step 4: Simplify right side
    86,102,165.42x = 2,764,660,809,484,201
  5. Step 5: Solve for x
    x = 2,764,660,809,484,201/86,102,165.42
  6. Step 6: Final answer
    x = 32,109,074.10

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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.