Home / 78,732,340.70-118,098,511.05-54,464,513.90

Finding the Fourth Proportional to 78,732,340.70, 118,098,511.05 and 54,464,513.90

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Solution

The fourth proportional to 78,732,340.70, 118,098,511.05 and 54,464,513.90 is: 81,696,770.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,340.70 : 118,098,511.05 = 54,464,513.90 : x
  2. Step 2: Convert to fraction form
    78,732,340.70/118,098,511.05 = 54,464,513.90/x
  3. Step 3: Cross multiply
    78,732,340.70x = 118,098,511.05 × 54,464,513.90
  4. Step 4: Simplify right side
    78,732,340.70x = 6,432,177,996,652,028
  5. Step 5: Solve for x
    x = 6,432,177,996,652,028/78,732,340.70
  6. Step 6: Final answer
    x = 81,696,770.85

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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.