Home / 78,566,651.76-108,402,857.28-51,741,213.48

Finding the Fourth Proportional to 78,566,651.76, 108,402,857.28 and 51,741,213.48

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Solution

The fourth proportional to 78,566,651.76, 108,402,857.28 and 51,741,213.48 is: 71,390,281.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,566,651.76 : 108,402,857.28 = 51,741,213.48 : x
  2. Step 2: Convert to fraction form
    78,566,651.76/108,402,857.28 = 51,741,213.48/x
  3. Step 3: Cross multiply
    78,566,651.76x = 108,402,857.28 × 51,741,213.48
  4. Step 4: Simplify right side
    78,566,651.76x = 5,608,895,380,366,452
  5. Step 5: Solve for x
    x = 5,608,895,380,366,452/78,566,651.76
  6. Step 6: Final answer
    x = 71,390,281.43

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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.