Home / 80,721,000.30-121,081,500.45-56,487,290.70

Finding the Fourth Proportional to 80,721,000.30, 121,081,500.45 and 56,487,290.70

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Solution

The fourth proportional to 80,721,000.30, 121,081,500.45 and 56,487,290.70 is: 84,730,936.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,721,000.30 : 121,081,500.45 = 56,487,290.70 : x
  2. Step 2: Convert to fraction form
    80,721,000.30/121,081,500.45 = 56,487,290.70/x
  3. Step 3: Cross multiply
    80,721,000.30x = 121,081,500.45 × 56,487,290.70
  4. Step 4: Simplify right side
    80,721,000.30x = 6,839,565,914,311,331
  5. Step 5: Solve for x
    x = 6,839,565,914,311,331/80,721,000.30
  6. Step 6: Final answer
    x = 84,730,936.05

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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.