Home / 77,409.35-106,834.79-45,581.21

Finding the Fourth Proportional to 77,409.35, 106,834.79 and 45,581.21

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Solution

The fourth proportional to 77,409.35, 106,834.79 and 45,581.21 is: 62,907.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,409.35 : 106,834.79 = 45,581.21 : x
  2. Step 2: Convert to fraction form
    77,409.35/106,834.79 = 45,581.21/x
  3. Step 3: Cross multiply
    77,409.35x = 106,834.79 × 45,581.21
  4. Step 4: Simplify right side
    77,409.35x = 4,869,658,998.30
  5. Step 5: Solve for x
    x = 4,869,658,998.30/77,409.35
  6. Step 6: Final answer
    x = 62,907.89

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1.5x scale

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.