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Finding the Fourth Proportional to 83,949, 115,874.04 and 67,070.76

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Solution

The fourth proportional to 83,949, 115,874.04 and 67,070.76 is: 92,577.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,949 : 115,874.04 = 67,070.76 : x
  2. Step 2: Convert to fraction form
    83,949/115,874.04 = 67,070.76/x
  3. Step 3: Cross multiply
    83,949x = 115,874.04 × 67,070.76
  4. Step 4: Simplify right side
    83,949x = 7,771,759,927.07
  5. Step 5: Solve for x
    x = 7,771,759,927.07/83,949
  6. Step 6: Final answer
    x = 92,577.16

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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.