Home / 78,772,394.67-118,200,221.78-55,891,202.43

Finding the Fourth Proportional to 78,772,394.67, 118,200,221.78 and 55,891,202.43

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Solution

The fourth proportional to 78,772,394.67, 118,200,221.78 and 55,891,202.43 is: 83,866,341.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,772,394.67 : 118,200,221.78 = 55,891,202.43 : x
  2. Step 2: Convert to fraction form
    78,772,394.67/118,200,221.78 = 55,891,202.43/x
  3. Step 3: Cross multiply
    78,772,394.67x = 118,200,221.78 × 55,891,202.43
  4. Step 4: Simplify right side
    78,772,394.67x = 6,606,352,522,497,419
  5. Step 5: Solve for x
    x = 6,606,352,522,497,419/78,772,394.67
  6. Step 6: Final answer
    x = 83,866,341.12

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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.