Home / 78,918,479.72-118,375,051.90-27,799,163.72

Finding the Fourth Proportional to 78,918,479.72, 118,375,051.90 and 27,799,163.72

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Solution

The fourth proportional to 78,918,479.72, 118,375,051.90 and 27,799,163.72 is: 41,697,805.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,918,479.72 : 118,375,051.90 = 27,799,163.72 : x
  2. Step 2: Convert to fraction form
    78,918,479.72/118,375,051.90 = 27,799,163.72/x
  3. Step 3: Cross multiply
    78,918,479.72x = 118,375,051.90 × 27,799,163.72
  4. Step 4: Simplify right side
    78,918,479.72x = 3,290,727,448,131,597
  5. Step 5: Solve for x
    x = 3,290,727,448,131,597/78,918,479.72
  6. Step 6: Final answer
    x = 41,697,805.89

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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.