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Finding the Fourth Proportional to 66,498,457.20, 99,747,685.80 and 43,804,978.80

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Solution

The fourth proportional to 66,498,457.20, 99,747,685.80 and 43,804,978.80 is: 65,707,468.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,498,457.20 : 99,747,685.80 = 43,804,978.80 : x
  2. Step 2: Convert to fraction form
    66,498,457.20/99,747,685.80 = 43,804,978.80/x
  3. Step 3: Cross multiply
    66,498,457.20x = 99,747,685.80 × 43,804,978.80
  4. Step 4: Simplify right side
    66,498,457.20x = 4,369,445,261,818,060.50
  5. Step 5: Solve for x
    x = 4,369,445,261,818,060.50/66,498,457.20
  6. Step 6: Final answer
    x = 65,707,468.20

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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.