Home / 80,497,975.60-120,746,963.40-71,763,972.40

Finding the Fourth Proportional to 80,497,975.60, 120,746,963.40 and 71,763,972.40

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Solution

The fourth proportional to 80,497,975.60, 120,746,963.40 and 71,763,972.40 is: 107,645,958.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,497,975.60 : 120,746,963.40 = 71,763,972.40 : x
  2. Step 2: Convert to fraction form
    80,497,975.60/120,746,963.40 = 71,763,972.40/x
  3. Step 3: Cross multiply
    80,497,975.60x = 120,746,963.40 × 71,763,972.40
  4. Step 4: Simplify right side
    80,497,975.60x = 8,665,281,748,821,411
  5. Step 5: Solve for x
    x = 8,665,281,748,821,411/80,497,975.60
  6. Step 6: Final answer
    x = 107,645,958.60

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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.