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Finding the Fourth Proportional to 8,751,796.80, 13,127,695.20 and 7,688,914.80

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Solution

The fourth proportional to 8,751,796.80, 13,127,695.20 and 7,688,914.80 is: 11,533,372.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,751,796.80 : 13,127,695.20 = 7,688,914.80 : x
  2. Step 2: Convert to fraction form
    8,751,796.80/13,127,695.20 = 7,688,914.80/x
  3. Step 3: Cross multiply
    8,751,796.80x = 13,127,695.20 × 7,688,914.80
  4. Step 4: Simplify right side
    8,751,796.80x = 100,937,729,913,168.95
  5. Step 5: Solve for x
    x = 100,937,729,913,168.95/8,751,796.80
  6. Step 6: Final answer
    x = 11,533,372.20

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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.