Home / 80,497,980.60-120,746,970.90-71,763,977.40

Finding the Fourth Proportional to 80,497,980.60, 120,746,970.90 and 71,763,977.40

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Solution

The fourth proportional to 80,497,980.60, 120,746,970.90 and 71,763,977.40 is: 107,645,966.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,497,980.60 : 120,746,970.90 = 71,763,977.40 : x
  2. Step 2: Convert to fraction form
    80,497,980.60/120,746,970.90 = 71,763,977.40/x
  3. Step 3: Cross multiply
    80,497,980.60x = 120,746,970.90 × 71,763,977.40
  4. Step 4: Simplify right side
    80,497,980.60x = 8,665,282,890,786,059
  5. Step 5: Solve for x
    x = 8,665,282,890,786,059/80,497,980.60
  6. Step 6: Final answer
    x = 107,645,966.10

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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.