Home / 78,490,310.31-108,316,628.51-43,691,221.50

Finding the Fourth Proportional to 78,490,310.31, 108,316,628.51 and 43,691,221.50

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Solution

The fourth proportional to 78,490,310.31, 108,316,628.51 and 43,691,221.50 is: 60,293,885.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,490,310.31 : 108,316,628.51 = 43,691,221.50 : x
  2. Step 2: Convert to fraction form
    78,490,310.31/108,316,628.51 = 43,691,221.50/x
  3. Step 3: Cross multiply
    78,490,310.31x = 108,316,628.51 × 43,691,221.50
  4. Step 4: Simplify right side
    78,490,310.31x = 4,732,485,808,363,625
  5. Step 5: Solve for x
    x = 4,732,485,808,363,625/78,490,310.31
  6. Step 6: Final answer
    x = 60,293,885.83

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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.