Home / 85,929,727.53-128,891,095.70-21,231,903.36

Finding the Fourth Proportional to 85,929,727.53, 128,891,095.70 and 21,231,903.36

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Solution

The fourth proportional to 85,929,727.53, 128,891,095.70 and 21,231,903.36 is: 31,846,991.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,929,727.53 : 128,891,095.70 = 21,231,903.36 : x
  2. Step 2: Convert to fraction form
    85,929,727.53/128,891,095.70 = 21,231,903.36/x
  3. Step 3: Cross multiply
    85,929,727.53x = 128,891,095.70 × 21,231,903.36
  4. Step 4: Simplify right side
    85,929,727.53x = 2,736,603,287,760,752
  5. Step 5: Solve for x
    x = 2,736,603,287,760,752/85,929,727.53
  6. Step 6: Final answer
    x = 31,846,991.33

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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.