Home / 80,930,011.20-121,395,016.80-56,271,148.80

Finding the Fourth Proportional to 80,930,011.20, 121,395,016.80 and 56,271,148.80

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Solution

The fourth proportional to 80,930,011.20, 121,395,016.80 and 56,271,148.80 is: 84,406,723.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,930,011.20 : 121,395,016.80 = 56,271,148.80 : x
  2. Step 2: Convert to fraction form
    80,930,011.20/121,395,016.80 = 56,271,148.80/x
  3. Step 3: Cross multiply
    80,930,011.20x = 121,395,016.80 × 56,271,148.80
  4. Step 4: Simplify right side
    80,930,011.20x = 6,831,037,053,931,299
  5. Step 5: Solve for x
    x = 6,831,037,053,931,299/80,930,011.20
  6. Step 6: Final answer
    x = 84,406,723.20

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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.