Home / 80,721,331.80-121,081,997.70-56,487,622.20

Finding the Fourth Proportional to 80,721,331.80, 121,081,997.70 and 56,487,622.20

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Solution

The fourth proportional to 80,721,331.80, 121,081,997.70 and 56,487,622.20 is: 84,731,433.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,721,331.80 : 121,081,997.70 = 56,487,622.20 : x
  2. Step 2: Convert to fraction form
    80,721,331.80/121,081,997.70 = 56,487,622.20/x
  3. Step 3: Cross multiply
    80,721,331.80x = 121,081,997.70 × 56,487,622.20
  4. Step 4: Simplify right side
    80,721,331.80x = 6,839,634,141,298,869
  5. Step 5: Solve for x
    x = 6,839,634,141,298,869/80,721,331.80
  6. Step 6: Final answer
    x = 84,731,433.30

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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.