Home / 78,506.97-108,338.56-42,696.21

Finding the Fourth Proportional to 78,506.97, 108,338.56 and 42,696.21

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Solution

The fourth proportional to 78,506.97, 108,338.56 and 42,696.21 is: 58,920.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,506.97 : 108,338.56 = 42,696.21 : x
  2. Step 2: Convert to fraction form
    78,506.97/108,338.56 = 42,696.21/x
  3. Step 3: Cross multiply
    78,506.97x = 108,338.56 × 42,696.21
  4. Step 4: Simplify right side
    78,506.97x = 4,625,645,908.86
  5. Step 5: Solve for x
    x = 4,625,645,908.86/78,506.97
  6. Step 6: Final answer
    x = 58,920.19

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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.