Home / 69,643.50-96,109.16-39,428.04

Finding the Fourth Proportional to 69,643.50, 96,109.16 and 39,428.04

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Solution

The fourth proportional to 69,643.50, 96,109.16 and 39,428.04 is: 54,411.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,643.50 : 96,109.16 = 39,428.04 : x
  2. Step 2: Convert to fraction form
    69,643.50/96,109.16 = 39,428.04/x
  3. Step 3: Cross multiply
    69,643.50x = 96,109.16 × 39,428.04
  4. Step 4: Simplify right side
    69,643.50x = 3,789,395,804.85
  5. Step 5: Solve for x
    x = 3,789,395,804.85/69,643.50
  6. Step 6: Final answer
    x = 54,411.33

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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.