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Finding the Fourth Proportional to 28,471,504.20, 42,714,539.02 and 8,276,746.20

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Solution

The fourth proportional to 28,471,504.20, 42,714,539.02 and 8,276,746.20 is: 12,417,236.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,471,504.20 : 42,714,539.02 = 8,276,746.20 : x
  2. Step 2: Convert to fraction form
    28,471,504.20/42,714,539.02 = 8,276,746.20/x
  3. Step 3: Cross multiply
    28,471,504.20x = 42,714,539.02 × 8,276,746.20
  4. Step 4: Simplify right side
    28,471,504.20x = 353,537,398,518,536.75
  5. Step 5: Solve for x
    x = 353,537,398,518,536.75/28,471,504.20
  6. Step 6: Final answer
    x = 12,417,236.41

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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.