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Finding the Fourth Proportional to 28,471,492.21, 42,714,521.02 and 8,276,734.21

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Solution

The fourth proportional to 28,471,492.21, 42,714,521.02 and 8,276,734.21 is: 12,417,218.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,471,492.21 : 42,714,521.02 = 8,276,734.21 : x
  2. Step 2: Convert to fraction form
    28,471,492.21/42,714,521.02 = 8,276,734.21/x
  3. Step 3: Cross multiply
    28,471,492.21x = 42,714,521.02 × 8,276,734.21
  4. Step 4: Simplify right side
    28,471,492.21x = 353,536,737,389,998.12
  5. Step 5: Solve for x
    x = 353,536,737,389,998.12/28,471,492.21
  6. Step 6: Final answer
    x = 12,417,218.42

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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.