Home / 78,656,780.25-108,546,820.62-45,636,690.62

Finding the Fourth Proportional to 78,656,780.25, 108,546,820.62 and 45,636,690.62

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Solution

The fourth proportional to 78,656,780.25, 108,546,820.62 and 45,636,690.62 is: 62,978,902.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,656,780.25 : 108,546,820.62 = 45,636,690.62 : x
  2. Step 2: Convert to fraction form
    78,656,780.25/108,546,820.62 = 45,636,690.62/x
  3. Step 3: Cross multiply
    78,656,780.25x = 108,546,820.62 × 45,636,690.62
  4. Step 4: Simplify right side
    78,656,780.25x = 4,953,717,670,419,577
  5. Step 5: Solve for x
    x = 4,953,717,670,419,577/78,656,780.25
  6. Step 6: Final answer
    x = 62,978,902.20

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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.