Home / 80,928,624.80-121,392,937.20-72,425,568.80

Finding the Fourth Proportional to 80,928,624.80, 121,392,937.20 and 72,425,568.80

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Solution

The fourth proportional to 80,928,624.80, 121,392,937.20 and 72,425,568.80 is: 108,638,353.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,928,624.80 : 121,392,937.20 = 72,425,568.80 : x
  2. Step 2: Convert to fraction form
    80,928,624.80/121,392,937.20 = 72,425,568.80/x
  3. Step 3: Cross multiply
    80,928,624.80x = 121,392,937.20 × 72,425,568.80
  4. Step 4: Simplify right side
    80,928,624.80x = 8,791,952,525,012,679
  5. Step 5: Solve for x
    x = 8,791,952,525,012,679/80,928,624.80
  6. Step 6: Final answer
    x = 108,638,353.20

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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.