Home / 81,018,371.64-111,795,452.46-64,540,457.40

Finding the Fourth Proportional to 81,018,371.64, 111,795,452.46 and 64,540,457.40

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Solution

The fourth proportional to 81,018,371.64, 111,795,452.46 and 64,540,457.40 is: 89,057,944.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,018,371.64 : 111,795,452.46 = 64,540,457.40 : x
  2. Step 2: Convert to fraction form
    81,018,371.64/111,795,452.46 = 64,540,457.40/x
  3. Step 3: Cross multiply
    81,018,371.64x = 111,795,452.46 × 64,540,457.40
  4. Step 4: Simplify right side
    81,018,371.64x = 7,215,329,637,008,355
  5. Step 5: Solve for x
    x = 7,215,329,637,008,355/81,018,371.64
  6. Step 6: Final answer
    x = 89,057,944.40

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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.