Home / 80,930,019.20-121,395,028.80-56,271,156.80

Finding the Fourth Proportional to 80,930,019.20, 121,395,028.80 and 56,271,156.80

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Solution

The fourth proportional to 80,930,019.20, 121,395,028.80 and 56,271,156.80 is: 84,406,735.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,930,019.20 : 121,395,028.80 = 56,271,156.80 : x
  2. Step 2: Convert to fraction form
    80,930,019.20/121,395,028.80 = 56,271,156.80/x
  3. Step 3: Cross multiply
    80,930,019.20x = 121,395,028.80 × 56,271,156.80
  4. Step 4: Simplify right side
    80,930,019.20x = 6,831,038,700,345,315
  5. Step 5: Solve for x
    x = 6,831,038,700,345,315/80,930,019.20
  6. Step 6: Final answer
    x = 84,406,735.20

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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.