Home / 90,860.84-136,313.94-31,697

Finding the Fourth Proportional to 90,860.84, 136,313.94 and 31,697

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Solution

The fourth proportional to 90,860.84, 136,313.94 and 31,697 is: 47,553.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,860.84 : 136,313.94 = 31,697 : x
  2. Step 2: Convert to fraction form
    90,860.84/136,313.94 = 31,697/x
  3. Step 3: Cross multiply
    90,860.84x = 136,313.94 × 31,697
  4. Step 4: Simplify right side
    90,860.84x = 4,320,742,956.18
  5. Step 5: Solve for x
    x = 4,320,742,956.18/90,860.84
  6. Step 6: Final answer
    x = 47,553.41

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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.