Home / 80,643,438,568.20-120,965,157,852.30-55,828,119,937.80

Finding the Fourth Proportional to 80,643,438,568.20, 120,965,157,852.30 and 55,828,119,937.80

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Solution

The fourth proportional to 80,643,438,568.20, 120,965,157,852.30 and 55,828,119,937.80 is: 83,742,179,906.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,643,438,568.20 : 120,965,157,852.30 = 55,828,119,937.80 : x
  2. Step 2: Convert to fraction form
    80,643,438,568.20/120,965,157,852.30 = 55,828,119,937.80/x
  3. Step 3: Cross multiply
    80,643,438,568.20x = 120,965,157,852.30 × 55,828,119,937.80
  4. Step 4: Simplify right side
    80,643,438,568.20x = 6,753,257,340,873,114,386,432
  5. Step 5: Solve for x
    x = 6,753,257,340,873,114,386,432/80,643,438,568.20
  6. Step 6: Final answer
    x = 83,742,179,906.70

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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.