Home / 64,128.14-88,521.51-57,401.90

Finding the Fourth Proportional to 64,128.14, 88,521.51 and 57,401.90

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Solution

The fourth proportional to 64,128.14, 88,521.51 and 57,401.90 is: 79,236.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,128.14 : 88,521.51 = 57,401.90 : x
  2. Step 2: Convert to fraction form
    64,128.14/88,521.51 = 57,401.90/x
  3. Step 3: Cross multiply
    64,128.14x = 88,521.51 × 57,401.90
  4. Step 4: Simplify right side
    64,128.14x = 5,081,302,864.87
  5. Step 5: Solve for x
    x = 5,081,302,864.87/64,128.14
  6. Step 6: Final answer
    x = 79,236.71

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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.