Home / 81,239.85-112,110.99-45,429.94

Finding the Fourth Proportional to 81,239.85, 112,110.99 and 45,429.94

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Solution

The fourth proportional to 81,239.85, 112,110.99 and 45,429.94 is: 62,693.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,239.85 : 112,110.99 = 45,429.94 : x
  2. Step 2: Convert to fraction form
    81,239.85/112,110.99 = 45,429.94/x
  3. Step 3: Cross multiply
    81,239.85x = 112,110.99 × 45,429.94
  4. Step 4: Simplify right side
    81,239.85x = 5,093,195,549.04
  5. Step 5: Solve for x
    x = 5,093,195,549.04/81,239.85
  6. Step 6: Final answer
    x = 62,693.32

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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.