Home / 78,792.40-108,734.97-42,983.65

Finding the Fourth Proportional to 78,792.40, 108,734.97 and 42,983.65

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Solution

The fourth proportional to 78,792.40, 108,734.97 and 42,983.65 is: 59,318.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,792.40 : 108,734.97 = 42,983.65 : x
  2. Step 2: Convert to fraction form
    78,792.40/108,734.97 = 42,983.65/x
  3. Step 3: Cross multiply
    78,792.40x = 108,734.97 × 42,983.65
  4. Step 4: Simplify right side
    78,792.40x = 4,673,825,893.24
  5. Step 5: Solve for x
    x = 4,673,825,893.24/78,792.40
  6. Step 6: Final answer
    x = 59,318.23

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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.