Home / 78,863.43-118,196.70-39,431.82

Finding the Fourth Proportional to 78,863.43, 118,196.70 and 39,431.82

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Solution

The fourth proportional to 78,863.43, 118,196.70 and 39,431.82 is: 59,098.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,863.43 : 118,196.70 = 39,431.82 : x
  2. Step 2: Convert to fraction form
    78,863.43/118,196.70 = 39,431.82/x
  3. Step 3: Cross multiply
    78,863.43x = 118,196.70 × 39,431.82
  4. Step 4: Simplify right side
    78,863.43x = 4,660,710,998.99
  5. Step 5: Solve for x
    x = 4,660,710,998.99/78,863.43
  6. Step 6: Final answer
    x = 59,098.51

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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.