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Finding the Fourth Proportional to 78,721,805.60, 118,082,708.40 and 50,094,850.40

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Solution

The fourth proportional to 78,721,805.60, 118,082,708.40 and 50,094,850.40 is: 75,142,275.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,721,805.60 : 118,082,708.40 = 50,094,850.40 : x
  2. Step 2: Convert to fraction form
    78,721,805.60/118,082,708.40 = 50,094,850.40/x
  3. Step 3: Cross multiply
    78,721,805.60x = 118,082,708.40 × 50,094,850.40
  4. Step 4: Simplify right side
    78,721,805.60x = 5,915,335,612,124,823
  5. Step 5: Solve for x
    x = 5,915,335,612,124,823/78,721,805.60
  6. Step 6: Final answer
    x = 75,142,275.60

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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.