Home / 78,019.58-117,032.61-25,429.52

Finding the Fourth Proportional to 78,019.58, 117,032.61 and 25,429.52

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Solution

The fourth proportional to 78,019.58, 117,032.61 and 25,429.52 is: 38,145.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,019.58 : 117,032.61 = 25,429.52 : x
  2. Step 2: Convert to fraction form
    78,019.58/117,032.61 = 25,429.52/x
  3. Step 3: Cross multiply
    78,019.58x = 117,032.61 × 25,429.52
  4. Step 4: Simplify right side
    78,019.58x = 2,976,083,096.65
  5. Step 5: Solve for x
    x = 2,976,083,096.65/78,019.58
  6. Step 6: Final answer
    x = 38,145.34

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1.5x scale

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.