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Finding the Fourth Proportional to 66,162,003.80, 99,243,005.70 and 63,185,934.20

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Solution

The fourth proportional to 66,162,003.80, 99,243,005.70 and 63,185,934.20 is: 94,778,901.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,162,003.80 : 99,243,005.70 = 63,185,934.20 : x
  2. Step 2: Convert to fraction form
    66,162,003.80/99,243,005.70 = 63,185,934.20/x
  3. Step 3: Cross multiply
    66,162,003.80x = 99,243,005.70 × 63,185,934.20
  4. Step 4: Simplify right side
    66,162,003.80x = 6,270,762,027,970,425
  5. Step 5: Solve for x
    x = 6,270,762,027,970,425/66,162,003.80
  6. Step 6: Final answer
    x = 94,778,901.30

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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.