Home / 81,057,956.78-121,594,409.68-26,470,828.40

Finding the Fourth Proportional to 81,057,956.78, 121,594,409.68 and 26,470,828.40

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Solution

The fourth proportional to 81,057,956.78, 121,594,409.68 and 26,470,828.40 is: 39,708,683.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,057,956.78 : 121,594,409.68 = 26,470,828.40 : x
  2. Step 2: Convert to fraction form
    81,057,956.78/121,594,409.68 = 26,470,828.40/x
  3. Step 3: Cross multiply
    81,057,956.78x = 121,594,409.68 × 26,470,828.40
  4. Step 4: Simplify right side
    81,057,956.78x = 3,218,704,752,906,224.50
  5. Step 5: Solve for x
    x = 3,218,704,752,906,224.50/81,057,956.78
  6. Step 6: Final answer
    x = 39,708,683.52

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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.