Home / 78,384,988.82-108,171,705.17-43,105,068.90

Finding the Fourth Proportional to 78,384,988.82, 108,171,705.17 and 43,105,068.90

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Solution

The fourth proportional to 78,384,988.82, 108,171,705.17 and 43,105,068.90 is: 59,485,226.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,384,988.82 : 108,171,705.17 = 43,105,068.90 : x
  2. Step 2: Convert to fraction form
    78,384,988.82/108,171,705.17 = 43,105,068.90/x
  3. Step 3: Cross multiply
    78,384,988.82x = 108,171,705.17 × 43,105,068.90
  4. Step 4: Simplify right side
    78,384,988.82x = 4,662,748,804,167,811
  5. Step 5: Solve for x
    x = 4,662,748,804,167,811/78,384,988.82
  6. Step 6: Final answer
    x = 59,485,226.38

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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.