Home / 80,774,428.20-121,161,642.30-71,846,219.40

Finding the Fourth Proportional to 80,774,428.20, 121,161,642.30 and 71,846,219.40

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Solution

The fourth proportional to 80,774,428.20, 121,161,642.30 and 71,846,219.40 is: 107,769,329.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,774,428.20 : 121,161,642.30 = 71,846,219.40 : x
  2. Step 2: Convert to fraction form
    80,774,428.20/121,161,642.30 = 71,846,219.40/x
  3. Step 3: Cross multiply
    80,774,428.20x = 121,161,642.30 × 71,846,219.40
  4. Step 4: Simplify right side
    80,774,428.20x = 8,705,005,935,550,121
  5. Step 5: Solve for x
    x = 8,705,005,935,550,121/80,774,428.20
  6. Step 6: Final answer
    x = 107,769,329.10

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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.